Home / 15,645.85-21,591.37-8,572.52

Finding the Fourth Proportional to 15,645.85, 21,591.37 and 8,572.52

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Solution

The fourth proportional to 15,645.85, 21,591.37 and 8,572.52 is: 11,830.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.85 : 21,591.37 = 8,572.52 : x
  2. Step 2: Convert to fraction form
    15,645.85/21,591.37 = 8,572.52/x
  3. Step 3: Cross multiply
    15,645.85x = 21,591.37 × 8,572.52
  4. Step 4: Simplify right side
    15,645.85x = 185,092,451.15
  5. Step 5: Solve for x
    x = 185,092,451.15/15,645.85
  6. Step 6: Final answer
    x = 11,830.13

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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.