Home / 42,397.08-63,602.30-12,811.24

Finding the Fourth Proportional to 42,397.08, 63,602.30 and 12,811.24

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Solution

The fourth proportional to 42,397.08, 63,602.30 and 12,811.24 is: 19,218.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,397.08 : 63,602.30 = 12,811.24 : x
  2. Step 2: Convert to fraction form
    42,397.08/63,602.30 = 12,811.24/x
  3. Step 3: Cross multiply
    42,397.08x = 63,602.30 × 12,811.24
  4. Step 4: Simplify right side
    42,397.08x = 814,824,329.85
  5. Step 5: Solve for x
    x = 814,824,329.85/42,397.08
  6. Step 6: Final answer
    x = 19,218.88

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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.