Home / 20,563.60-28,377.72-11,132.16

Finding the Fourth Proportional to 20,563.60, 28,377.72 and 11,132.16

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Solution

The fourth proportional to 20,563.60, 28,377.72 and 11,132.16 is: 15,362.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.60 : 28,377.72 = 11,132.16 : x
  2. Step 2: Convert to fraction form
    20,563.60/28,377.72 = 11,132.16/x
  3. Step 3: Cross multiply
    20,563.60x = 28,377.72 × 11,132.16
  4. Step 4: Simplify right side
    20,563.60x = 315,905,319.48
  5. Step 5: Solve for x
    x = 315,905,319.48/20,563.60
  6. Step 6: Final answer
    x = 15,362.35

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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.