Home / 13,647.40-20,471.52-5,327.08

Finding the Fourth Proportional to 13,647.40, 20,471.52 and 5,327.08

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Solution

The fourth proportional to 13,647.40, 20,471.52 and 5,327.08 is: 7,990.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,647.40 : 20,471.52 = 5,327.08 : x
  2. Step 2: Convert to fraction form
    13,647.40/20,471.52 = 5,327.08/x
  3. Step 3: Cross multiply
    13,647.40x = 20,471.52 × 5,327.08
  4. Step 4: Simplify right side
    13,647.40x = 109,053,424.76
  5. Step 5: Solve for x
    x = 109,053,424.76/13,647.40
  6. Step 6: Final answer
    x = 7,990.78

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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.