Home / 15,500.16-21,391.36-8,876.16

Finding the Fourth Proportional to 15,500.16, 21,391.36 and 8,876.16

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Solution

The fourth proportional to 15,500.16, 21,391.36 and 8,876.16 is: 12,249.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.16 : 21,391.36 = 8,876.16 : x
  2. Step 2: Convert to fraction form
    15,500.16/21,391.36 = 8,876.16/x
  3. Step 3: Cross multiply
    15,500.16x = 21,391.36 × 8,876.16
  4. Step 4: Simplify right side
    15,500.16x = 189,873,133.98
  5. Step 5: Solve for x
    x = 189,873,133.98/15,500.16
  6. Step 6: Final answer
    x = 12,249.75

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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.