Home / 9,815.40-14,723.10-6,121.80

Finding the Fourth Proportional to 9,815.40, 14,723.10 and 6,121.80

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Solution

The fourth proportional to 9,815.40, 14,723.10 and 6,121.80 is: 9,182.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,815.40 : 14,723.10 = 6,121.80 : x
  2. Step 2: Convert to fraction form
    9,815.40/14,723.10 = 6,121.80/x
  3. Step 3: Cross multiply
    9,815.40x = 14,723.10 × 6,121.80
  4. Step 4: Simplify right side
    9,815.40x = 90,131,873.58
  5. Step 5: Solve for x
    x = 90,131,873.58/9,815.40
  6. Step 6: Final answer
    x = 9,182.70

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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.