Home / 42,220.38-63,330.51-20,021.64

Finding the Fourth Proportional to 42,220.38, 63,330.51 and 20,021.64

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Solution

The fourth proportional to 42,220.38, 63,330.51 and 20,021.64 is: 30,032.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,220.38 : 63,330.51 = 20,021.64 : x
  2. Step 2: Convert to fraction form
    42,220.38/63,330.51 = 20,021.64/x
  3. Step 3: Cross multiply
    42,220.38x = 63,330.51 × 20,021.64
  4. Step 4: Simplify right side
    42,220.38x = 1,267,980,672.24
  5. Step 5: Solve for x
    x = 1,267,980,672.24/42,220.38
  6. Step 6: Final answer
    x = 30,032.43

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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.