Home / 12,864.90-19,299.15-5,469.30

Finding the Fourth Proportional to 12,864.90, 19,299.15 and 5,469.30

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Solution

The fourth proportional to 12,864.90, 19,299.15 and 5,469.30 is: 8,204.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,864.90 : 19,299.15 = 5,469.30 : x
  2. Step 2: Convert to fraction form
    12,864.90/19,299.15 = 5,469.30/x
  3. Step 3: Cross multiply
    12,864.90x = 19,299.15 × 5,469.30
  4. Step 4: Simplify right side
    12,864.90x = 105,552,841.10
  5. Step 5: Solve for x
    x = 105,552,841.10/12,864.90
  6. Step 6: Final answer
    x = 8,204.72

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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.