Home / 18,899.28-26,081.03-10,515.78

Finding the Fourth Proportional to 18,899.28, 26,081.03 and 10,515.78

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Solution

The fourth proportional to 18,899.28, 26,081.03 and 10,515.78 is: 14,511.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,899.28 : 26,081.03 = 10,515.78 : x
  2. Step 2: Convert to fraction form
    18,899.28/26,081.03 = 10,515.78/x
  3. Step 3: Cross multiply
    18,899.28x = 26,081.03 × 10,515.78
  4. Step 4: Simplify right side
    18,899.28x = 274,262,373.65
  5. Step 5: Solve for x
    x = 274,262,373.65/18,899.28
  6. Step 6: Final answer
    x = 14,511.79

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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.