Home / 16,865.28-23,281.92-9,789.12

Finding the Fourth Proportional to 16,865.28, 23,281.92 and 9,789.12

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Solution

The fourth proportional to 16,865.28, 23,281.92 and 9,789.12 is: 13,513.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,865.28 : 23,281.92 = 9,789.12 : x
  2. Step 2: Convert to fraction form
    16,865.28/23,281.92 = 9,789.12/x
  3. Step 3: Cross multiply
    16,865.28x = 23,281.92 × 9,789.12
  4. Step 4: Simplify right side
    16,865.28x = 227,909,508.71
  5. Step 5: Solve for x
    x = 227,909,508.71/16,865.28
  6. Step 6: Final answer
    x = 13,513.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.