Home / 42,168.76-63,264.10-12,586.60

Finding the Fourth Proportional to 42,168.76, 63,264.10 and 12,586.60

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Solution

The fourth proportional to 42,168.76, 63,264.10 and 12,586.60 is: 18,883.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,168.76 : 63,264.10 = 12,586.60 : x
  2. Step 2: Convert to fraction form
    42,168.76/63,264.10 = 12,586.60/x
  3. Step 3: Cross multiply
    42,168.76x = 63,264.10 × 12,586.60
  4. Step 4: Simplify right side
    42,168.76x = 796,279,921.06
  5. Step 5: Solve for x
    x = 796,279,921.06/42,168.76
  6. Step 6: Final answer
    x = 18,883.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.