Home / 42,189.28-63,289.50-15,531.64

Finding the Fourth Proportional to 42,189.28, 63,289.50 and 15,531.64

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Solution

The fourth proportional to 42,189.28, 63,289.50 and 15,531.64 is: 23,299.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,189.28 : 63,289.50 = 15,531.64 : x
  2. Step 2: Convert to fraction form
    42,189.28/63,289.50 = 15,531.64/x
  3. Step 3: Cross multiply
    42,189.28x = 63,289.50 × 15,531.64
  4. Step 4: Simplify right side
    42,189.28x = 982,989,729.78
  5. Step 5: Solve for x
    x = 982,989,729.78/42,189.28
  6. Step 6: Final answer
    x = 23,299.51

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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.