Home / 11,187.65-15,439.01-6,711.39

Finding the Fourth Proportional to 11,187.65, 15,439.01 and 6,711.39

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Solution

The fourth proportional to 11,187.65, 15,439.01 and 6,711.39 is: 9,261.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.65 : 15,439.01 = 6,711.39 : x
  2. Step 2: Convert to fraction form
    11,187.65/15,439.01 = 6,711.39/x
  3. Step 3: Cross multiply
    11,187.65x = 15,439.01 × 6,711.39
  4. Step 4: Simplify right side
    11,187.65x = 103,617,183.77
  5. Step 5: Solve for x
    x = 103,617,183.77/11,187.65
  6. Step 6: Final answer
    x = 9,261.74

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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.