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Finding the Fourth Proportional to 17,998.80, 26,969.40 and 15,061.20

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Solution

The fourth proportional to 17,998.80, 26,969.40 and 15,061.20 is: 22,567.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,998.80 : 26,969.40 = 15,061.20 : x
  2. Step 2: Convert to fraction form
    17,998.80/26,969.40 = 15,061.20/x
  3. Step 3: Cross multiply
    17,998.80x = 26,969.40 × 15,061.20
  4. Step 4: Simplify right side
    17,998.80x = 406,191,527.28
  5. Step 5: Solve for x
    x = 406,191,527.28/17,998.80
  6. Step 6: Final answer
    x = 22,567.70

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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.