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Finding the Fourth Proportional to 16,985.50, 25,470.02 and 7,122.13

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Solution

The fourth proportional to 16,985.50, 25,470.02 and 7,122.13 is: 10,679.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,985.50 : 25,470.02 = 7,122.13 : x
  2. Step 2: Convert to fraction form
    16,985.50/25,470.02 = 7,122.13/x
  3. Step 3: Cross multiply
    16,985.50x = 25,470.02 × 7,122.13
  4. Step 4: Simplify right side
    16,985.50x = 181,400,747.67
  5. Step 5: Solve for x
    x = 181,400,747.67/16,985.50
  6. Step 6: Final answer
    x = 10,679.74

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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.