Home / 20,753.28-28,638.36-11,802.96

Finding the Fourth Proportional to 20,753.28, 28,638.36 and 11,802.96

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Solution

The fourth proportional to 20,753.28, 28,638.36 and 11,802.96 is: 16,287.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.28 : 28,638.36 = 11,802.96 : x
  2. Step 2: Convert to fraction form
    20,753.28/28,638.36 = 11,802.96/x
  3. Step 3: Cross multiply
    20,753.28x = 28,638.36 × 11,802.96
  4. Step 4: Simplify right side
    20,753.28x = 338,017,417.55
  5. Step 5: Solve for x
    x = 338,017,417.55/20,753.28
  6. Step 6: Final answer
    x = 16,287.42

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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.