Home / 42,372.39-63,559.04-12,790.47

Finding the Fourth Proportional to 42,372.39, 63,559.04 and 12,790.47

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Solution

The fourth proportional to 42,372.39, 63,559.04 and 12,790.47 is: 19,185.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,372.39 : 63,559.04 = 12,790.47 : x
  2. Step 2: Convert to fraction form
    42,372.39/63,559.04 = 12,790.47/x
  3. Step 3: Cross multiply
    42,372.39x = 63,559.04 × 12,790.47
  4. Step 4: Simplify right side
    42,372.39x = 812,949,930.40
  5. Step 5: Solve for x
    x = 812,949,930.40/42,372.39
  6. Step 6: Final answer
    x = 19,185.84

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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.