Home / 42,005.24-62,985.90-12,419.08

Finding the Fourth Proportional to 42,005.24, 62,985.90 and 12,419.08

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Solution

The fourth proportional to 42,005.24, 62,985.90 and 12,419.08 is: 18,622.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,005.24 : 62,985.90 = 12,419.08 : x
  2. Step 2: Convert to fraction form
    42,005.24/62,985.90 = 12,419.08/x
  3. Step 3: Cross multiply
    42,005.24x = 62,985.90 × 12,419.08
  4. Step 4: Simplify right side
    42,005.24x = 782,226,930.97
  5. Step 5: Solve for x
    x = 782,226,930.97/42,005.24
  6. Step 6: Final answer
    x = 18,622.13

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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.