Home / 15,187.68-20,961.18-8,899.92

Finding the Fourth Proportional to 15,187.68, 20,961.18 and 8,899.92

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Solution

The fourth proportional to 15,187.68, 20,961.18 and 8,899.92 is: 12,283.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187.68 : 20,961.18 = 8,899.92 : x
  2. Step 2: Convert to fraction form
    15,187.68/20,961.18 = 8,899.92/x
  3. Step 3: Cross multiply
    15,187.68x = 20,961.18 × 8,899.92
  4. Step 4: Simplify right side
    15,187.68x = 186,552,825.11
  5. Step 5: Solve for x
    x = 186,552,825.11/15,187.68
  6. Step 6: Final answer
    x = 12,283.17

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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.