Home / 15,496.97-21,385.76-8,783.90

Finding the Fourth Proportional to 15,496.97, 21,385.76 and 8,783.90

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Solution

The fourth proportional to 15,496.97, 21,385.76 and 8,783.90 is: 12,121.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,496.97 : 21,385.76 = 8,783.90 : x
  2. Step 2: Convert to fraction form
    15,496.97/21,385.76 = 8,783.90/x
  3. Step 3: Cross multiply
    15,496.97x = 21,385.76 × 8,783.90
  4. Step 4: Simplify right side
    15,496.97x = 187,850,226.42
  5. Step 5: Solve for x
    x = 187,850,226.42/15,496.97
  6. Step 6: Final answer
    x = 12,121.74

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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.