Home / 10,818.60-16,210.30-9,781.80

Finding the Fourth Proportional to 10,818.60, 16,210.30 and 9,781.80

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Solution

The fourth proportional to 10,818.60, 16,210.30 and 9,781.80 is: 14,656.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,818.60 : 16,210.30 = 9,781.80 : x
  2. Step 2: Convert to fraction form
    10,818.60/16,210.30 = 9,781.80/x
  3. Step 3: Cross multiply
    10,818.60x = 16,210.30 × 9,781.80
  4. Step 4: Simplify right side
    10,818.60x = 158,565,912.54
  5. Step 5: Solve for x
    x = 158,565,912.54/10,818.60
  6. Step 6: Final answer
    x = 14,656.79

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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.