Home / 42,220.59-63,330.86-20,021.87

Finding the Fourth Proportional to 42,220.59, 63,330.86 and 20,021.87

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Solution

The fourth proportional to 42,220.59, 63,330.86 and 20,021.87 is: 30,032.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,220.59 : 63,330.86 = 20,021.87 : x
  2. Step 2: Convert to fraction form
    42,220.59/63,330.86 = 20,021.87/x
  3. Step 3: Cross multiply
    42,220.59x = 63,330.86 × 20,021.87
  4. Step 4: Simplify right side
    42,220.59x = 1,268,001,829.14
  5. Step 5: Solve for x
    x = 1,268,001,829.14/42,220.59
  6. Step 6: Final answer
    x = 30,032.78

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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.