Home / 15,442.63-21,310.68-8,728.13

Finding the Fourth Proportional to 15,442.63, 21,310.68 and 8,728.13

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Solution

The fourth proportional to 15,442.63, 21,310.68 and 8,728.13 is: 12,044.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,442.63 : 21,310.68 = 8,728.13 : x
  2. Step 2: Convert to fraction form
    15,442.63/21,310.68 = 8,728.13/x
  3. Step 3: Cross multiply
    15,442.63x = 21,310.68 × 8,728.13
  4. Step 4: Simplify right side
    15,442.63x = 186,002,385.43
  5. Step 5: Solve for x
    x = 186,002,385.43/15,442.63
  6. Step 6: Final answer
    x = 12,044.73

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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.