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Finding the Fourth Proportional to 16,985.52, 25,470.08 and 7,122.14

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Solution

The fourth proportional to 16,985.52, 25,470.08 and 7,122.14 is: 10,679.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,985.52 : 25,470.08 = 7,122.14 : x
  2. Step 2: Convert to fraction form
    16,985.52/25,470.08 = 7,122.14/x
  3. Step 3: Cross multiply
    16,985.52x = 25,470.08 × 7,122.14
  4. Step 4: Simplify right side
    16,985.52x = 181,401,475.57
  5. Step 5: Solve for x
    x = 181,401,475.57/16,985.52
  6. Step 6: Final answer
    x = 10,679.77

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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.