Home / 20,693.68-28,557.12-11,262.28

Finding the Fourth Proportional to 20,693.68, 28,557.12 and 11,262.28

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Solution

The fourth proportional to 20,693.68, 28,557.12 and 11,262.28 is: 15,541.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.68 : 28,557.12 = 11,262.28 : x
  2. Step 2: Convert to fraction form
    20,693.68/28,557.12 = 11,262.28/x
  3. Step 3: Cross multiply
    20,693.68x = 28,557.12 × 11,262.28
  4. Step 4: Simplify right side
    20,693.68x = 321,618,281.43
  5. Step 5: Solve for x
    x = 321,618,281.43/20,693.68
  6. Step 6: Final answer
    x = 15,541.86

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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.