Home / 28,564.38-39,418.79-15,989.13

Finding the Fourth Proportional to 28,564.38, 39,418.79 and 15,989.13

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Solution

The fourth proportional to 28,564.38, 39,418.79 and 15,989.13 is: 22,064.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,564.38 : 39,418.79 = 15,989.13 : x
  2. Step 2: Convert to fraction form
    28,564.38/39,418.79 = 15,989.13/x
  3. Step 3: Cross multiply
    28,564.38x = 39,418.79 × 15,989.13
  4. Step 4: Simplify right side
    28,564.38x = 630,272,077.81
  5. Step 5: Solve for x
    x = 630,272,077.81/28,564.38
  6. Step 6: Final answer
    x = 22,064.97

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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.