Home / 42,437.28-63,669.73-20,247.78

Finding the Fourth Proportional to 42,437.28, 63,669.73 and 20,247.78

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Solution

The fourth proportional to 42,437.28, 63,669.73 and 20,247.78 is: 30,378.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,437.28 : 63,669.73 = 20,247.78 : x
  2. Step 2: Convert to fraction form
    42,437.28/63,669.73 = 20,247.78/x
  3. Step 3: Cross multiply
    42,437.28x = 63,669.73 × 20,247.78
  4. Step 4: Simplify right side
    42,437.28x = 1,289,170,685.70
  5. Step 5: Solve for x
    x = 1,289,170,685.70/42,437.28
  6. Step 6: Final answer
    x = 30,378.26

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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.