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Finding the Fourth Proportional to 17,931.30, 26,884.80 and 9,499.20

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Solution

The fourth proportional to 17,931.30, 26,884.80 and 9,499.20 is: 14,242.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,931.30 : 26,884.80 = 9,499.20 : x
  2. Step 2: Convert to fraction form
    17,931.30/26,884.80 = 9,499.20/x
  3. Step 3: Cross multiply
    17,931.30x = 26,884.80 × 9,499.20
  4. Step 4: Simplify right side
    17,931.30x = 255,384,092.16
  5. Step 5: Solve for x
    x = 255,384,092.16/17,931.30
  6. Step 6: Final answer
    x = 14,242.36

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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.