Home / 31,649.39-47,484.45-12,945.15

Finding the Fourth Proportional to 31,649.39, 47,484.45 and 12,945.15

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Solution

The fourth proportional to 31,649.39, 47,484.45 and 12,945.15 is: 19,421.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,649.39 : 47,484.45 = 12,945.15 : x
  2. Step 2: Convert to fraction form
    31,649.39/47,484.45 = 12,945.15/x
  3. Step 3: Cross multiply
    31,649.39x = 47,484.45 × 12,945.15
  4. Step 4: Simplify right side
    31,649.39x = 614,693,327.92
  5. Step 5: Solve for x
    x = 614,693,327.92/31,649.39
  6. Step 6: Final answer
    x = 19,421.97

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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.