Home / 15,877.28-21,912.22-8,805.07

Finding the Fourth Proportional to 15,877.28, 21,912.22 and 8,805.07

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Solution

The fourth proportional to 15,877.28, 21,912.22 and 8,805.07 is: 12,151.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,877.28 : 21,912.22 = 8,805.07 : x
  2. Step 2: Convert to fraction form
    15,877.28/21,912.22 = 8,805.07/x
  3. Step 3: Cross multiply
    15,877.28x = 21,912.22 × 8,805.07
  4. Step 4: Simplify right side
    15,877.28x = 192,938,669.35
  5. Step 5: Solve for x
    x = 192,938,669.35/15,877.28
  6. Step 6: Final answer
    x = 12,151.87

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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.