Home / 31,292.28-46,938.78-10,515.78

Finding the Fourth Proportional to 31,292.28, 46,938.78 and 10,515.78

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Solution

The fourth proportional to 31,292.28, 46,938.78 and 10,515.78 is: 15,773.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,292.28 : 46,938.78 = 10,515.78 : x
  2. Step 2: Convert to fraction form
    31,292.28/46,938.78 = 10,515.78/x
  3. Step 3: Cross multiply
    31,292.28x = 46,938.78 × 10,515.78
  4. Step 4: Simplify right side
    31,292.28x = 493,597,883.95
  5. Step 5: Solve for x
    x = 493,597,883.95/31,292.28
  6. Step 6: Final answer
    x = 15,773.79

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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.