Home / 15,645.94-21,591.90-8,572.82

Finding the Fourth Proportional to 15,645.94, 21,591.90 and 8,572.82

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Solution

The fourth proportional to 15,645.94, 21,591.90 and 8,572.82 is: 11,830.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.94 : 21,591.90 = 8,572.82 : x
  2. Step 2: Convert to fraction form
    15,645.94/21,591.90 = 8,572.82/x
  3. Step 3: Cross multiply
    15,645.94x = 21,591.90 × 8,572.82
  4. Step 4: Simplify right side
    15,645.94x = 185,103,364.20
  5. Step 5: Solve for x
    x = 185,103,364.20/15,645.94
  6. Step 6: Final answer
    x = 11,830.76

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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.