Home / 22,861.28-31,534.44-15,687.92

Finding the Fourth Proportional to 22,861.28, 31,534.44 and 15,687.92

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Solution

The fourth proportional to 22,861.28, 31,534.44 and 15,687.92 is: 21,639.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,861.28 : 31,534.44 = 15,687.92 : x
  2. Step 2: Convert to fraction form
    22,861.28/31,534.44 = 15,687.92/x
  3. Step 3: Cross multiply
    22,861.28x = 31,534.44 × 15,687.92
  4. Step 4: Simplify right side
    22,861.28x = 494,709,771.96
  5. Step 5: Solve for x
    x = 494,709,771.96/22,861.28
  6. Step 6: Final answer
    x = 21,639.64

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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.