Home / 13,528.30-20,278.68-9,146.20

Finding the Fourth Proportional to 13,528.30, 20,278.68 and 9,146.20

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Solution

The fourth proportional to 13,528.30, 20,278.68 and 9,146.20 is: 13,709.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,528.30 : 20,278.68 = 9,146.20 : x
  2. Step 2: Convert to fraction form
    13,528.30/20,278.68 = 9,146.20/x
  3. Step 3: Cross multiply
    13,528.30x = 20,278.68 × 9,146.20
  4. Step 4: Simplify right side
    13,528.30x = 185,472,863.02
  5. Step 5: Solve for x
    x = 185,472,863.02/13,528.30
  6. Step 6: Final answer
    x = 13,709.99

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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.