Home / 42,521.81-63,789.66-12,932.78

Finding the Fourth Proportional to 42,521.81, 63,789.66 and 12,932.78

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Solution

The fourth proportional to 42,521.81, 63,789.66 and 12,932.78 is: 19,401.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,521.81 : 63,789.66 = 12,932.78 : x
  2. Step 2: Convert to fraction form
    42,521.81/63,789.66 = 12,932.78/x
  3. Step 3: Cross multiply
    42,521.81x = 63,789.66 × 12,932.78
  4. Step 4: Simplify right side
    42,521.81x = 824,977,320.11
  5. Step 5: Solve for x
    x = 824,977,320.11/42,521.81
  6. Step 6: Final answer
    x = 19,401.28

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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.