Home / 28,283.14-39,031.92-15,707.89

Finding the Fourth Proportional to 28,283.14, 39,031.92 and 15,707.89

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Solution

The fourth proportional to 28,283.14, 39,031.92 and 15,707.89 is: 21,677.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,283.14 : 39,031.92 = 15,707.89 : x
  2. Step 2: Convert to fraction form
    28,283.14/39,031.92 = 15,707.89/x
  3. Step 3: Cross multiply
    28,283.14x = 39,031.92 × 15,707.89
  4. Step 4: Simplify right side
    28,283.14x = 613,109,105.85
  5. Step 5: Solve for x
    x = 613,109,105.85/28,283.14
  6. Step 6: Final answer
    x = 21,677.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.