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Finding the Fourth Proportional to 17,998.91, 26,998.61 and 6,312.47

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Solution

The fourth proportional to 17,998.91, 26,998.61 and 6,312.47 is: 9,468.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,998.91 : 26,998.61 = 6,312.47 : x
  2. Step 2: Convert to fraction form
    17,998.91/26,998.61 = 6,312.47/x
  3. Step 3: Cross multiply
    17,998.91x = 26,998.61 × 6,312.47
  4. Step 4: Simplify right side
    17,998.91x = 170,427,915.67
  5. Step 5: Solve for x
    x = 170,427,915.67/17,998.91
  6. Step 6: Final answer
    x = 9,468.79

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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.