Home / 11,818.10-16,315.78-7,844.60

Finding the Fourth Proportional to 11,818.10, 16,315.78 and 7,844.60

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Solution

The fourth proportional to 11,818.10, 16,315.78 and 7,844.60 is: 10,830.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,818.10 : 16,315.78 = 7,844.60 : x
  2. Step 2: Convert to fraction form
    11,818.10/16,315.78 = 7,844.60/x
  3. Step 3: Cross multiply
    11,818.10x = 16,315.78 × 7,844.60
  4. Step 4: Simplify right side
    11,818.10x = 127,990,767.79
  5. Step 5: Solve for x
    x = 127,990,767.79/11,818.10
  6. Step 6: Final answer
    x = 10,830.06

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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.