Home / 15,872.28-21,904.52-8,798.72

Finding the Fourth Proportional to 15,872.28, 21,904.52 and 8,798.72

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Solution

The fourth proportional to 15,872.28, 21,904.52 and 8,798.72 is: 12,142.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,872.28 : 21,904.52 = 8,798.72 : x
  2. Step 2: Convert to fraction form
    15,872.28/21,904.52 = 8,798.72/x
  3. Step 3: Cross multiply
    15,872.28x = 21,904.52 × 8,798.72
  4. Step 4: Simplify right side
    15,872.28x = 192,731,738.21
  5. Step 5: Solve for x
    x = 192,731,738.21/15,872.28
  6. Step 6: Final answer
    x = 12,142.66

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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.