Home / 15,442.92-21,309.53-8,728.55

Finding the Fourth Proportional to 15,442.92, 21,309.53 and 8,728.55

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Solution

The fourth proportional to 15,442.92, 21,309.53 and 8,728.55 is: 12,044.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,442.92 : 21,309.53 = 8,728.55 : x
  2. Step 2: Convert to fraction form
    15,442.92/21,309.53 = 8,728.55/x
  3. Step 3: Cross multiply
    15,442.92x = 21,309.53 × 8,728.55
  4. Step 4: Simplify right side
    15,442.92x = 186,001,147.89
  5. Step 5: Solve for x
    x = 186,001,147.89/15,442.92
  6. Step 6: Final answer
    x = 12,044.43

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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.