Home / 12,778.18-19,167.35-4,458.15

Finding the Fourth Proportional to 12,778.18, 19,167.35 and 4,458.15

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Solution

The fourth proportional to 12,778.18, 19,167.35 and 4,458.15 is: 6,687.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.18 : 19,167.35 = 4,458.15 : x
  2. Step 2: Convert to fraction form
    12,778.18/19,167.35 = 4,458.15/x
  3. Step 3: Cross multiply
    12,778.18x = 19,167.35 × 4,458.15
  4. Step 4: Simplify right side
    12,778.18x = 85,450,899.11
  5. Step 5: Solve for x
    x = 85,450,899.11/12,778.18
  6. Step 6: Final answer
    x = 6,687.25

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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.