Home / 20,750.38-28,635.06-11,319.28

Finding the Fourth Proportional to 20,750.38, 28,635.06 and 11,319.28

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Solution

The fourth proportional to 20,750.38, 28,635.06 and 11,319.28 is: 15,620.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.38 : 28,635.06 = 11,319.28 : x
  2. Step 2: Convert to fraction form
    20,750.38/28,635.06 = 11,319.28/x
  3. Step 3: Cross multiply
    20,750.38x = 28,635.06 × 11,319.28
  4. Step 4: Simplify right side
    20,750.38x = 324,128,261.96
  5. Step 5: Solve for x
    x = 324,128,261.96/20,750.38
  6. Step 6: Final answer
    x = 15,620.35

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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.