Home / 42,439.07-63,658.97-12,859.22

Finding the Fourth Proportional to 42,439.07, 63,658.97 and 12,859.22

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Solution

The fourth proportional to 42,439.07, 63,658.97 and 12,859.22 is: 19,288.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,439.07 : 63,658.97 = 12,859.22 : x
  2. Step 2: Convert to fraction form
    42,439.07/63,658.97 = 12,859.22/x
  3. Step 3: Cross multiply
    42,439.07x = 63,658.97 × 12,859.22
  4. Step 4: Simplify right side
    42,439.07x = 818,604,317.61
  5. Step 5: Solve for x
    x = 818,604,317.61/42,439.07
  6. Step 6: Final answer
    x = 19,288.93

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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.