Home / 42,269.97-63,406.12-12,687.81

Finding the Fourth Proportional to 42,269.97, 63,406.12 and 12,687.81

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Solution

The fourth proportional to 42,269.97, 63,406.12 and 12,687.81 is: 19,032.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,269.97 : 63,406.12 = 12,687.81 : x
  2. Step 2: Convert to fraction form
    42,269.97/63,406.12 = 12,687.81/x
  3. Step 3: Cross multiply
    42,269.97x = 63,406.12 × 12,687.81
  4. Step 4: Simplify right side
    42,269.97x = 804,484,771.68
  5. Step 5: Solve for x
    x = 804,484,771.68/42,269.97
  6. Step 6: Final answer
    x = 19,032.06

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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.