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Finding the Fourth Proportional to 9,673.80, 14,478.30 and 8,507.40

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Solution

The fourth proportional to 9,673.80, 14,478.30 and 8,507.40 is: 12,732.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,673.80 : 14,478.30 = 8,507.40 : x
  2. Step 2: Convert to fraction form
    9,673.80/14,478.30 = 8,507.40/x
  3. Step 3: Cross multiply
    9,673.80x = 14,478.30 × 8,507.40
  4. Step 4: Simplify right side
    9,673.80x = 123,172,689.42
  5. Step 5: Solve for x
    x = 123,172,689.42/9,673.80
  6. Step 6: Final answer
    x = 12,732.61

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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.