Home / 42,090.04-63,138.48-12,507.91

Finding the Fourth Proportional to 42,090.04, 63,138.48 and 12,507.91

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Solution

The fourth proportional to 42,090.04, 63,138.48 and 12,507.91 is: 18,762.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,090.04 : 63,138.48 = 12,507.91 : x
  2. Step 2: Convert to fraction form
    42,090.04/63,138.48 = 12,507.91/x
  3. Step 3: Cross multiply
    42,090.04x = 63,138.48 × 12,507.91
  4. Step 4: Simplify right side
    42,090.04x = 789,730,425.38
  5. Step 5: Solve for x
    x = 789,730,425.38/42,090.04
  6. Step 6: Final answer
    x = 18,762.88

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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.