Home / 28,603.23-39,474-15,856.13

Finding the Fourth Proportional to 28,603.23, 39,474 and 15,856.13

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Solution

The fourth proportional to 28,603.23, 39,474 and 15,856.13 is: 21,882.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,603.23 : 39,474 = 15,856.13 : x
  2. Step 2: Convert to fraction form
    28,603.23/39,474 = 15,856.13/x
  3. Step 3: Cross multiply
    28,603.23x = 39,474 × 15,856.13
  4. Step 4: Simplify right side
    28,603.23x = 625,904,678.25
  5. Step 5: Solve for x
    x = 625,904,678.25/28,603.23
  6. Step 6: Final answer
    x = 21,882.31

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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.