Home / 42,006.22-63,020.80-12,424.02

Finding the Fourth Proportional to 42,006.22, 63,020.80 and 12,424.02

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Solution

The fourth proportional to 42,006.22, 63,020.80 and 12,424.02 is: 18,639.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,006.22 : 63,020.80 = 12,424.02 : x
  2. Step 2: Convert to fraction form
    42,006.22/63,020.80 = 12,424.02/x
  3. Step 3: Cross multiply
    42,006.22x = 63,020.80 × 12,424.02
  4. Step 4: Simplify right side
    42,006.22x = 782,971,679.62
  5. Step 5: Solve for x
    x = 782,971,679.62/42,006.22
  6. Step 6: Final answer
    x = 18,639.42

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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.