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Finding the Fourth Proportional to 9,579.80, 14,369.70 and 9,385.40

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Solution

The fourth proportional to 9,579.80, 14,369.70 and 9,385.40 is: 14,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,579.80 : 14,369.70 = 9,385.40 : x
  2. Step 2: Convert to fraction form
    9,579.80/14,369.70 = 9,385.40/x
  3. Step 3: Cross multiply
    9,579.80x = 14,369.70 × 9,385.40
  4. Step 4: Simplify right side
    9,579.80x = 134,865,382.38
  5. Step 5: Solve for x
    x = 134,865,382.38/9,579.80
  6. Step 6: Final answer
    x = 14,078.10

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Similar ratio
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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.