Home / 11,187.65-15,439.05-6,151.91

Finding the Fourth Proportional to 11,187.65, 15,439.05 and 6,151.91

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Solution

The fourth proportional to 11,187.65, 15,439.05 and 6,151.91 is: 8,489.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.65 : 15,439.05 = 6,151.91 : x
  2. Step 2: Convert to fraction form
    11,187.65/15,439.05 = 6,151.91/x
  3. Step 3: Cross multiply
    11,187.65x = 15,439.05 × 6,151.91
  4. Step 4: Simplify right side
    11,187.65x = 94,979,568.89
  5. Step 5: Solve for x
    x = 94,979,568.89/11,187.65
  6. Step 6: Final answer
    x = 8,489.68

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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.