Home / 14,253.28-21,380.16-5,488.64

Finding the Fourth Proportional to 14,253.28, 21,380.16 and 5,488.64

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Solution

The fourth proportional to 14,253.28, 21,380.16 and 5,488.64 is: 8,233.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,253.28 : 21,380.16 = 5,488.64 : x
  2. Step 2: Convert to fraction form
    14,253.28/21,380.16 = 5,488.64/x
  3. Step 3: Cross multiply
    14,253.28x = 21,380.16 × 5,488.64
  4. Step 4: Simplify right side
    14,253.28x = 117,348,001.38
  5. Step 5: Solve for x
    x = 117,348,001.38/14,253.28
  6. Step 6: Final answer
    x = 8,233.05

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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.