Home / 20,652.54-28,500.56-11,221.10

Finding the Fourth Proportional to 20,652.54, 28,500.56 and 11,221.10

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Solution

The fourth proportional to 20,652.54, 28,500.56 and 11,221.10 is: 15,485.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652.54 : 28,500.56 = 11,221.10 : x
  2. Step 2: Convert to fraction form
    20,652.54/28,500.56 = 11,221.10/x
  3. Step 3: Cross multiply
    20,652.54x = 28,500.56 × 11,221.10
  4. Step 4: Simplify right side
    20,652.54x = 319,807,584.16
  5. Step 5: Solve for x
    x = 319,807,584.16/20,652.54
  6. Step 6: Final answer
    x = 15,485.15

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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.