Home / 15,140.39-20,891.99-8,767.10

Finding the Fourth Proportional to 15,140.39, 20,891.99 and 8,767.10

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Solution

The fourth proportional to 15,140.39, 20,891.99 and 8,767.10 is: 12,097.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,140.39 : 20,891.99 = 8,767.10 : x
  2. Step 2: Convert to fraction form
    15,140.39/20,891.99 = 8,767.10/x
  3. Step 3: Cross multiply
    15,140.39x = 20,891.99 × 8,767.10
  4. Step 4: Simplify right side
    15,140.39x = 183,162,239.68
  5. Step 5: Solve for x
    x = 183,162,239.68/15,140.39
  6. Step 6: Final answer
    x = 12,097.59

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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.