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Finding the Fourth Proportional to 17,312.91, 25,950.78 and 8,990.87

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Solution

The fourth proportional to 17,312.91, 25,950.78 and 8,990.87 is: 13,476.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,312.91 : 25,950.78 = 8,990.87 : x
  2. Step 2: Convert to fraction form
    17,312.91/25,950.78 = 8,990.87/x
  3. Step 3: Cross multiply
    17,312.91x = 25,950.78 × 8,990.87
  4. Step 4: Simplify right side
    17,312.91x = 233,319,959.62
  5. Step 5: Solve for x
    x = 233,319,959.62/17,312.91
  6. Step 6: Final answer
    x = 13,476.65

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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.