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Finding the Fourth Proportional to 12,895.07, 17,790.17 and 9,545.90

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Solution

The fourth proportional to 12,895.07, 17,790.17 and 9,545.90 is: 13,169.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,895.07 : 17,790.17 = 9,545.90 : x
  2. Step 2: Convert to fraction form
    12,895.07/17,790.17 = 9,545.90/x
  3. Step 3: Cross multiply
    12,895.07x = 17,790.17 × 9,545.90
  4. Step 4: Simplify right side
    12,895.07x = 169,823,047.12
  5. Step 5: Solve for x
    x = 169,823,047.12/12,895.07
  6. Step 6: Final answer
    x = 13,169.62

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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.