Home / 18,711.18-25,826.67-11,155.09

Finding the Fourth Proportional to 18,711.18, 25,826.67 and 11,155.09

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Solution

The fourth proportional to 18,711.18, 25,826.67 and 11,155.09 is: 15,397.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.18 : 25,826.67 = 11,155.09 : x
  2. Step 2: Convert to fraction form
    18,711.18/25,826.67 = 11,155.09/x
  3. Step 3: Cross multiply
    18,711.18x = 25,826.67 × 11,155.09
  4. Step 4: Simplify right side
    18,711.18x = 288,098,828.25
  5. Step 5: Solve for x
    x = 288,098,828.25/18,711.18
  6. Step 6: Final answer
    x = 15,397.15

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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.