Home / 20,802.38-28,707.28-11,370.94

Finding the Fourth Proportional to 20,802.38, 28,707.28 and 11,370.94

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Solution

The fourth proportional to 20,802.38, 28,707.28 and 11,370.94 is: 15,691.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.38 : 28,707.28 = 11,370.94 : x
  2. Step 2: Convert to fraction form
    20,802.38/28,707.28 = 11,370.94/x
  3. Step 3: Cross multiply
    20,802.38x = 28,707.28 × 11,370.94
  4. Step 4: Simplify right side
    20,802.38x = 326,428,758.44
  5. Step 5: Solve for x
    x = 326,428,758.44/20,802.38
  6. Step 6: Final answer
    x = 15,691.89

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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.