Home / 42,200.90-63,288.38-20,007.72

Finding the Fourth Proportional to 42,200.90, 63,288.38 and 20,007.72

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Solution

The fourth proportional to 42,200.90, 63,288.38 and 20,007.72 is: 30,005.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,200.90 : 63,288.38 = 20,007.72 : x
  2. Step 2: Convert to fraction form
    42,200.90/63,288.38 = 20,007.72/x
  3. Step 3: Cross multiply
    42,200.90x = 63,288.38 × 20,007.72
  4. Step 4: Simplify right side
    42,200.90x = 1,266,256,186.29
  5. Step 5: Solve for x
    x = 1,266,256,186.29/42,200.90
  6. Step 6: Final answer
    x = 30,005.43

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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.