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Finding the Fourth Proportional to 17,021.78, 25,538.12 and 7,031.22

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Solution

The fourth proportional to 17,021.78, 25,538.12 and 7,031.22 is: 10,549.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,021.78 : 25,538.12 = 7,031.22 : x
  2. Step 2: Convert to fraction form
    17,021.78/25,538.12 = 7,031.22/x
  3. Step 3: Cross multiply
    17,021.78x = 25,538.12 × 7,031.22
  4. Step 4: Simplify right side
    17,021.78x = 179,564,179.20
  5. Step 5: Solve for x
    x = 179,564,179.20/17,021.78
  6. Step 6: Final answer
    x = 10,549.08

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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.