Home / 15,649.86-21,591.30-8,930.64

Finding the Fourth Proportional to 15,649.86, 21,591.30 and 8,930.64

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Solution

The fourth proportional to 15,649.86, 21,591.30 and 8,930.64 is: 12,321.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,649.86 : 21,591.30 = 8,930.64 : x
  2. Step 2: Convert to fraction form
    15,649.86/21,591.30 = 8,930.64/x
  3. Step 3: Cross multiply
    15,649.86x = 21,591.30 × 8,930.64
  4. Step 4: Simplify right side
    15,649.86x = 192,824,127.43
  5. Step 5: Solve for x
    x = 192,824,127.43/15,649.86
  6. Step 6: Final answer
    x = 12,321.14

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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.