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Finding the Fourth Proportional to 17,988.82, 26,985.49 and 9,657.38

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Solution

The fourth proportional to 17,988.82, 26,985.49 and 9,657.38 is: 14,487.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,988.82 : 26,985.49 = 9,657.38 : x
  2. Step 2: Convert to fraction form
    17,988.82/26,985.49 = 9,657.38/x
  3. Step 3: Cross multiply
    17,988.82x = 26,985.49 × 9,657.38
  4. Step 4: Simplify right side
    17,988.82x = 260,609,174.74
  5. Step 5: Solve for x
    x = 260,609,174.74/17,988.82
  6. Step 6: Final answer
    x = 14,487.29

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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.