Home / 15,439.13-21,298.17-9,764.32

Finding the Fourth Proportional to 15,439.13, 21,298.17 and 9,764.32

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Solution

The fourth proportional to 15,439.13, 21,298.17 and 9,764.32 is: 13,469.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.13 : 21,298.17 = 9,764.32 : x
  2. Step 2: Convert to fraction form
    15,439.13/21,298.17 = 9,764.32/x
  3. Step 3: Cross multiply
    15,439.13x = 21,298.17 × 9,764.32
  4. Step 4: Simplify right side
    15,439.13x = 207,962,147.29
  5. Step 5: Solve for x
    x = 207,962,147.29/15,439.13
  6. Step 6: Final answer
    x = 13,469.81

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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.