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Finding the Fourth Proportional to 12,304.28, 16,979.90 and 6,715.28

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Solution

The fourth proportional to 12,304.28, 16,979.90 and 6,715.28 is: 9,267.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,304.28 : 16,979.90 = 6,715.28 : x
  2. Step 2: Convert to fraction form
    12,304.28/16,979.90 = 6,715.28/x
  3. Step 3: Cross multiply
    12,304.28x = 16,979.90 × 6,715.28
  4. Step 4: Simplify right side
    12,304.28x = 114,024,664.40
  5. Step 5: Solve for x
    x = 114,024,664.40/12,304.28
  6. Step 6: Final answer
    x = 9,267.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.