Home / 15,942.24-21,999.68-8,869.10

Finding the Fourth Proportional to 15,942.24, 21,999.68 and 8,869.10

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Solution

The fourth proportional to 15,942.24, 21,999.68 and 8,869.10 is: 12,239.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,942.24 : 21,999.68 = 8,869.10 : x
  2. Step 2: Convert to fraction form
    15,942.24/21,999.68 = 8,869.10/x
  3. Step 3: Cross multiply
    15,942.24x = 21,999.68 × 8,869.10
  4. Step 4: Simplify right side
    15,942.24x = 195,117,361.89
  5. Step 5: Solve for x
    x = 195,117,361.89/15,942.24
  6. Step 6: Final answer
    x = 12,239.02

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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.