Home / 42,129.03-63,213.08-18,433.45

Finding the Fourth Proportional to 42,129.03, 63,213.08 and 18,433.45

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Solution

The fourth proportional to 42,129.03, 63,213.08 and 18,433.45 is: 27,658.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,129.03 : 63,213.08 = 18,433.45 : x
  2. Step 2: Convert to fraction form
    42,129.03/63,213.08 = 18,433.45/x
  3. Step 3: Cross multiply
    42,129.03x = 63,213.08 × 18,433.45
  4. Step 4: Simplify right side
    42,129.03x = 1,165,235,057.36
  5. Step 5: Solve for x
    x = 1,165,235,057.36/42,129.03
  6. Step 6: Final answer
    x = 27,658.72

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1.5x scale

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.