Home / 15,467.28-21,344.68-8,752.72

Finding the Fourth Proportional to 15,467.28, 21,344.68 and 8,752.72

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Solution

The fourth proportional to 15,467.28, 21,344.68 and 8,752.72 is: 12,078.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,467.28 : 21,344.68 = 8,752.72 : x
  2. Step 2: Convert to fraction form
    15,467.28/21,344.68 = 8,752.72/x
  3. Step 3: Cross multiply
    15,467.28x = 21,344.68 × 8,752.72
  4. Step 4: Simplify right side
    15,467.28x = 186,824,007.53
  5. Step 5: Solve for x
    x = 186,824,007.53/15,467.28
  6. Step 6: Final answer
    x = 12,078.66

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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.