Home / 15,664.50-21,617.10-8,591.22

Finding the Fourth Proportional to 15,664.50, 21,617.10 and 8,591.22

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Solution

The fourth proportional to 15,664.50, 21,617.10 and 8,591.22 is: 11,855.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,664.50 : 21,617.10 = 8,591.22 : x
  2. Step 2: Convert to fraction form
    15,664.50/21,617.10 = 8,591.22/x
  3. Step 3: Cross multiply
    15,664.50x = 21,617.10 × 8,591.22
  4. Step 4: Simplify right side
    15,664.50x = 185,717,261.86
  5. Step 5: Solve for x
    x = 185,717,261.86/15,664.50
  6. Step 6: Final answer
    x = 11,855.93

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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.