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Finding the Fourth Proportional to 17,988.78, 24,811.14 and 13,207.23

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Solution

The fourth proportional to 17,988.78, 24,811.14 and 13,207.23 is: 18,216.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,988.78 : 24,811.14 = 13,207.23 : x
  2. Step 2: Convert to fraction form
    17,988.78/24,811.14 = 13,207.23/x
  3. Step 3: Cross multiply
    17,988.78x = 24,811.14 × 13,207.23
  4. Step 4: Simplify right side
    17,988.78x = 327,686,300.85
  5. Step 5: Solve for x
    x = 327,686,300.85/17,988.78
  6. Step 6: Final answer
    x = 18,216.15

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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.