Home / 31,441.47-47,156.61-10,381.80

Finding the Fourth Proportional to 31,441.47, 47,156.61 and 10,381.80

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Solution

The fourth proportional to 31,441.47, 47,156.61 and 10,381.80 is: 15,570.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,441.47 : 47,156.61 = 10,381.80 : x
  2. Step 2: Convert to fraction form
    31,441.47/47,156.61 = 10,381.80/x
  3. Step 3: Cross multiply
    31,441.47x = 47,156.61 × 10,381.80
  4. Step 4: Simplify right side
    31,441.47x = 489,570,709.47
  5. Step 5: Solve for x
    x = 489,570,709.47/31,441.47
  6. Step 6: Final answer
    x = 15,570.86

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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.