Home / 15,645.83-21,591.27-8,572.23

Finding the Fourth Proportional to 15,645.83, 21,591.27 and 8,572.23

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Solution

The fourth proportional to 15,645.83, 21,591.27 and 8,572.23 is: 11,829.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.83 : 21,591.27 = 8,572.23 : x
  2. Step 2: Convert to fraction form
    15,645.83/21,591.27 = 8,572.23/x
  3. Step 3: Cross multiply
    15,645.83x = 21,591.27 × 8,572.23
  4. Step 4: Simplify right side
    15,645.83x = 185,085,332.43
  5. Step 5: Solve for x
    x = 185,085,332.43/15,645.83
  6. Step 6: Final answer
    x = 11,829.69

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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.