Home / 12,879,000.90-19,318,501.35-7,777,167.30

Finding the Fourth Proportional to 12,879,000.90, 19,318,501.35 and 7,777,167.30

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Solution

The fourth proportional to 12,879,000.90, 19,318,501.35 and 7,777,167.30 is: 11,665,750.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879,000.90 : 19,318,501.35 = 7,777,167.30 : x
  2. Step 2: Convert to fraction form
    12,879,000.90/19,318,501.35 = 7,777,167.30/x
  3. Step 3: Cross multiply
    12,879,000.90x = 19,318,501.35 × 7,777,167.30
  4. Step 4: Simplify right side
    12,879,000.90x = 150,243,216,984,225.88
  5. Step 5: Solve for x
    x = 150,243,216,984,225.88/12,879,000.90
  6. Step 6: Final answer
    x = 11,665,750.95

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.