Home / 20,802.52-28,707.06-11,370.88

Finding the Fourth Proportional to 20,802.52, 28,707.06 and 11,370.88

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Solution

The fourth proportional to 20,802.52, 28,707.06 and 11,370.88 is: 15,691.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.52 : 28,707.06 = 11,370.88 : x
  2. Step 2: Convert to fraction form
    20,802.52/28,707.06 = 11,370.88/x
  3. Step 3: Cross multiply
    20,802.52x = 28,707.06 × 11,370.88
  4. Step 4: Simplify right side
    20,802.52x = 326,424,534.41
  5. Step 5: Solve for x
    x = 326,424,534.41/20,802.52
  6. Step 6: Final answer
    x = 15,691.59

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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.