Home / 20,702.38-28,580.52-15,626.38

Finding the Fourth Proportional to 20,702.38, 28,580.52 and 15,626.38

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Solution

The fourth proportional to 20,702.38, 28,580.52 and 15,626.38 is: 21,572.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.38 : 28,580.52 = 15,626.38 : x
  2. Step 2: Convert to fraction form
    20,702.38/28,580.52 = 15,626.38/x
  3. Step 3: Cross multiply
    20,702.38x = 28,580.52 × 15,626.38
  4. Step 4: Simplify right side
    20,702.38x = 446,610,066.12
  5. Step 5: Solve for x
    x = 446,610,066.12/20,702.38
  6. Step 6: Final answer
    x = 21,572.89

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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.