Home / 28,240.27-38,972.10-15,494.11

Finding the Fourth Proportional to 28,240.27, 38,972.10 and 15,494.11

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Solution

The fourth proportional to 28,240.27, 38,972.10 and 15,494.11 is: 21,382.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240.27 : 38,972.10 = 15,494.11 : x
  2. Step 2: Convert to fraction form
    28,240.27/38,972.10 = 15,494.11/x
  3. Step 3: Cross multiply
    28,240.27x = 38,972.10 × 15,494.11
  4. Step 4: Simplify right side
    28,240.27x = 603,837,965.00
  5. Step 5: Solve for x
    x = 603,837,965.00/28,240.27
  6. Step 6: Final answer
    x = 21,382.16

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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.