Home / 42,147.36-63,238.04-18,757.80

Finding the Fourth Proportional to 42,147.36, 63,238.04 and 18,757.80

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Solution

The fourth proportional to 42,147.36, 63,238.04 and 18,757.80 is: 28,144.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,147.36 : 63,238.04 = 18,757.80 : x
  2. Step 2: Convert to fraction form
    42,147.36/63,238.04 = 18,757.80/x
  3. Step 3: Cross multiply
    42,147.36x = 63,238.04 × 18,757.80
  4. Step 4: Simplify right side
    42,147.36x = 1,186,206,506.71
  5. Step 5: Solve for x
    x = 1,186,206,506.71/42,147.36
  6. Step 6: Final answer
    x = 28,144.27

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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.