Home / 15,986.28-22,061.08-8,912.56

Finding the Fourth Proportional to 15,986.28, 22,061.08 and 8,912.56

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Solution

The fourth proportional to 15,986.28, 22,061.08 and 8,912.56 is: 12,299.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,986.28 : 22,061.08 = 8,912.56 : x
  2. Step 2: Convert to fraction form
    15,986.28/22,061.08 = 8,912.56/x
  3. Step 3: Cross multiply
    15,986.28x = 22,061.08 × 8,912.56
  4. Step 4: Simplify right side
    15,986.28x = 196,620,699.16
  5. Step 5: Solve for x
    x = 196,620,699.16/15,986.28
  6. Step 6: Final answer
    x = 12,299.34

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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.