Home / 28,603.92-39,472.79-15,857.04

Finding the Fourth Proportional to 28,603.92, 39,472.79 and 15,857.04

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Solution

The fourth proportional to 28,603.92, 39,472.79 and 15,857.04 is: 21,882.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,603.92 : 39,472.79 = 15,857.04 : x
  2. Step 2: Convert to fraction form
    28,603.92/39,472.79 = 15,857.04/x
  3. Step 3: Cross multiply
    28,603.92x = 39,472.79 × 15,857.04
  4. Step 4: Simplify right side
    28,603.92x = 625,921,530.66
  5. Step 5: Solve for x
    x = 625,921,530.66/28,603.92
  6. Step 6: Final answer
    x = 21,882.37

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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.