Home / 13,512.32-20,278.88-5,727.36

Finding the Fourth Proportional to 13,512.32, 20,278.88 and 5,727.36

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Solution

The fourth proportional to 13,512.32, 20,278.88 and 5,727.36 is: 8,595.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.32 : 20,278.88 = 5,727.36 : x
  2. Step 2: Convert to fraction form
    13,512.32/20,278.88 = 5,727.36/x
  3. Step 3: Cross multiply
    13,512.32x = 20,278.88 × 5,727.36
  4. Step 4: Simplify right side
    13,512.32x = 116,144,446.16
  5. Step 5: Solve for x
    x = 116,144,446.16/13,512.32
  6. Step 6: Final answer
    x = 8,595.45

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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.