Home / 42,021.85-63,045.99-12,439.94

Finding the Fourth Proportional to 42,021.85, 63,045.99 and 12,439.94

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Solution

The fourth proportional to 42,021.85, 63,045.99 and 12,439.94 is: 18,663.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,021.85 : 63,045.99 = 12,439.94 : x
  2. Step 2: Convert to fraction form
    42,021.85/63,045.99 = 12,439.94/x
  3. Step 3: Cross multiply
    42,021.85x = 63,045.99 × 12,439.94
  4. Step 4: Simplify right side
    42,021.85x = 784,288,490.46
  5. Step 5: Solve for x
    x = 784,288,490.46/42,021.85
  6. Step 6: Final answer
    x = 18,663.83

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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.