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Finding the Fourth Proportional to 17,889.39, 24,686.39 and 9,931.11

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Solution

The fourth proportional to 17,889.39, 24,686.39 and 9,931.11 is: 13,704.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,889.39 : 24,686.39 = 9,931.11 : x
  2. Step 2: Convert to fraction form
    17,889.39/24,686.39 = 9,931.11/x
  3. Step 3: Cross multiply
    17,889.39x = 24,686.39 × 9,931.11
  4. Step 4: Simplify right side
    17,889.39x = 245,163,186.85
  5. Step 5: Solve for x
    x = 245,163,186.85/17,889.39
  6. Step 6: Final answer
    x = 13,704.39

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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.