Home / 15,936.27-21,990.85-8,862.13

Finding the Fourth Proportional to 15,936.27, 21,990.85 and 8,862.13

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Solution

The fourth proportional to 15,936.27, 21,990.85 and 8,862.13 is: 12,229.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,936.27 : 21,990.85 = 8,862.13 : x
  2. Step 2: Convert to fraction form
    15,936.27/21,990.85 = 8,862.13/x
  3. Step 3: Cross multiply
    15,936.27x = 21,990.85 × 8,862.13
  4. Step 4: Simplify right side
    15,936.27x = 194,885,771.51
  5. Step 5: Solve for x
    x = 194,885,771.51/15,936.27
  6. Step 6: Final answer
    x = 12,229.07

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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.