Home / 31,990.89-47,986.34-16,398.57

Finding the Fourth Proportional to 31,990.89, 47,986.34 and 16,398.57

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Solution

The fourth proportional to 31,990.89, 47,986.34 and 16,398.57 is: 24,597.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,990.89 : 47,986.34 = 16,398.57 : x
  2. Step 2: Convert to fraction form
    31,990.89/47,986.34 = 16,398.57/x
  3. Step 3: Cross multiply
    31,990.89x = 47,986.34 × 16,398.57
  4. Step 4: Simplify right side
    31,990.89x = 786,907,355.53
  5. Step 5: Solve for x
    x = 786,907,355.53/31,990.89
  6. Step 6: Final answer
    x = 24,597.86

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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.