Home / 28,433.28-42,644.16-15,965.76

Finding the Fourth Proportional to 28,433.28, 42,644.16 and 15,965.76

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Solution

The fourth proportional to 28,433.28, 42,644.16 and 15,965.76 is: 23,945.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,433.28 : 42,644.16 = 15,965.76 : x
  2. Step 2: Convert to fraction form
    28,433.28/42,644.16 = 15,965.76/x
  3. Step 3: Cross multiply
    28,433.28x = 42,644.16 × 15,965.76
  4. Step 4: Simplify right side
    28,433.28x = 680,846,423.96
  5. Step 5: Solve for x
    x = 680,846,423.96/28,433.28
  6. Step 6: Final answer
    x = 23,945.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.