Home / 15,851.57-21,874.29-8,777.53

Finding the Fourth Proportional to 15,851.57, 21,874.29 and 8,777.53

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Solution

The fourth proportional to 15,851.57, 21,874.29 and 8,777.53 is: 12,112.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,851.57 : 21,874.29 = 8,777.53 : x
  2. Step 2: Convert to fraction form
    15,851.57/21,874.29 = 8,777.53/x
  3. Step 3: Cross multiply
    15,851.57x = 21,874.29 × 8,777.53
  4. Step 4: Simplify right side
    15,851.57x = 192,002,231.13
  5. Step 5: Solve for x
    x = 192,002,231.13/15,851.57
  6. Step 6: Final answer
    x = 12,112.51

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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.