Home / 42,372.64-63,559.41-12,790.72

Finding the Fourth Proportional to 42,372.64, 63,559.41 and 12,790.72

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Solution

The fourth proportional to 42,372.64, 63,559.41 and 12,790.72 is: 19,186.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,372.64 : 63,559.41 = 12,790.72 : x
  2. Step 2: Convert to fraction form
    42,372.64/63,559.41 = 12,790.72/x
  3. Step 3: Cross multiply
    42,372.64x = 63,559.41 × 12,790.72
  4. Step 4: Simplify right side
    42,372.64x = 812,970,616.68
  5. Step 5: Solve for x
    x = 812,970,616.68/42,372.64
  6. Step 6: Final answer
    x = 19,186.22

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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.