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Finding the Fourth Proportional to 17,140.60, 25,710.90 and 11,235.70

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Solution

The fourth proportional to 17,140.60, 25,710.90 and 11,235.70 is: 16,853.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,140.60 : 25,710.90 = 11,235.70 : x
  2. Step 2: Convert to fraction form
    17,140.60/25,710.90 = 11,235.70/x
  3. Step 3: Cross multiply
    17,140.60x = 25,710.90 × 11,235.70
  4. Step 4: Simplify right side
    17,140.60x = 288,879,959.13
  5. Step 5: Solve for x
    x = 288,879,959.13/17,140.60
  6. Step 6: Final answer
    x = 16,853.55

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Similar ratio
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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.