Home / 15,872.22-21,902.49-8,700.99

Finding the Fourth Proportional to 15,872.22, 21,902.49 and 8,700.99

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Solution

The fourth proportional to 15,872.22, 21,902.49 and 8,700.99 is: 12,006.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,872.22 : 21,902.49 = 8,700.99 : x
  2. Step 2: Convert to fraction form
    15,872.22/21,902.49 = 8,700.99/x
  3. Step 3: Cross multiply
    15,872.22x = 21,902.49 × 8,700.99
  4. Step 4: Simplify right side
    15,872.22x = 190,573,302.96
  5. Step 5: Solve for x
    x = 190,573,302.96/15,872.22
  6. Step 6: Final answer
    x = 12,006.72

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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.