Home / 31,330.69-47,008.33-13,788.21

Finding the Fourth Proportional to 31,330.69, 47,008.33 and 13,788.21

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Solution

The fourth proportional to 31,330.69, 47,008.33 and 13,788.21 is: 20,687.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,330.69 : 47,008.33 = 13,788.21 : x
  2. Step 2: Convert to fraction form
    31,330.69/47,008.33 = 13,788.21/x
  3. Step 3: Cross multiply
    31,330.69x = 47,008.33 × 13,788.21
  4. Step 4: Simplify right side
    31,330.69x = 648,160,725.79
  5. Step 5: Solve for x
    x = 648,160,725.79/31,330.69
  6. Step 6: Final answer
    x = 20,687.73

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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.