Home / 20,382.32-28,127.91-11,307.62

Finding the Fourth Proportional to 20,382.32, 28,127.91 and 11,307.62

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Solution

The fourth proportional to 20,382.32, 28,127.91 and 11,307.62 is: 15,604.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,382.32 : 28,127.91 = 11,307.62 : x
  2. Step 2: Convert to fraction form
    20,382.32/28,127.91 = 11,307.62/x
  3. Step 3: Cross multiply
    20,382.32x = 28,127.91 × 11,307.62
  4. Step 4: Simplify right side
    20,382.32x = 318,059,717.67
  5. Step 5: Solve for x
    x = 318,059,717.67/20,382.32
  6. Step 6: Final answer
    x = 15,604.69

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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.