Home / 13,712.32-20,550.40-7,475.04

Finding the Fourth Proportional to 13,712.32, 20,550.40 and 7,475.04

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Solution

The fourth proportional to 13,712.32, 20,550.40 and 7,475.04 is: 11,202.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.32 : 20,550.40 = 7,475.04 : x
  2. Step 2: Convert to fraction form
    13,712.32/20,550.40 = 7,475.04/x
  3. Step 3: Cross multiply
    13,712.32x = 20,550.40 × 7,475.04
  4. Step 4: Simplify right side
    13,712.32x = 153,615,062.02
  5. Step 5: Solve for x
    x = 153,615,062.02/13,712.32
  6. Step 6: Final answer
    x = 11,202.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.