Home / 42,022.80-63,037.40-12,439.92

Finding the Fourth Proportional to 42,022.80, 63,037.40 and 12,439.92

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Solution

The fourth proportional to 42,022.80, 63,037.40 and 12,439.92 is: 18,660.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,022.80 : 63,037.40 = 12,439.92 : x
  2. Step 2: Convert to fraction form
    42,022.80/63,037.40 = 12,439.92/x
  3. Step 3: Cross multiply
    42,022.80x = 63,037.40 × 12,439.92
  4. Step 4: Simplify right side
    42,022.80x = 784,180,213.01
  5. Step 5: Solve for x
    x = 784,180,213.01/42,022.80
  6. Step 6: Final answer
    x = 18,660.83

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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.