Home / 31,821.12-47,729.25-10,762.92

Finding the Fourth Proportional to 31,821.12, 47,729.25 and 10,762.92

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Solution

The fourth proportional to 31,821.12, 47,729.25 and 10,762.92 is: 16,143.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,821.12 : 47,729.25 = 10,762.92 : x
  2. Step 2: Convert to fraction form
    31,821.12/47,729.25 = 10,762.92/x
  3. Step 3: Cross multiply
    31,821.12x = 47,729.25 × 10,762.92
  4. Step 4: Simplify right side
    31,821.12x = 513,706,099.41
  5. Step 5: Solve for x
    x = 513,706,099.41/31,821.12
  6. Step 6: Final answer
    x = 16,143.56

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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.