Home / 11,818.65-16,305.17-6,781.05

Finding the Fourth Proportional to 11,818.65, 16,305.17 and 6,781.05

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Solution

The fourth proportional to 11,818.65, 16,305.17 and 6,781.05 is: 9,355.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,818.65 : 16,305.17 = 6,781.05 : x
  2. Step 2: Convert to fraction form
    11,818.65/16,305.17 = 6,781.05/x
  3. Step 3: Cross multiply
    11,818.65x = 16,305.17 × 6,781.05
  4. Step 4: Simplify right side
    11,818.65x = 110,566,139.12
  5. Step 5: Solve for x
    x = 110,566,139.12/11,818.65
  6. Step 6: Final answer
    x = 9,355.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.