Home / 42,154.90-63,236.60-13,690.66

Finding the Fourth Proportional to 42,154.90, 63,236.60 and 13,690.66

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Solution

The fourth proportional to 42,154.90, 63,236.60 and 13,690.66 is: 20,537.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,154.90 : 63,236.60 = 13,690.66 : x
  2. Step 2: Convert to fraction form
    42,154.90/63,236.60 = 13,690.66/x
  3. Step 3: Cross multiply
    42,154.90x = 63,236.60 × 13,690.66
  4. Step 4: Simplify right side
    42,154.90x = 865,750,790.16
  5. Step 5: Solve for x
    x = 865,750,790.16/42,154.90
  6. Step 6: Final answer
    x = 20,537.37

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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.