Home / 31,770.76-47,661.42-10,989.40

Finding the Fourth Proportional to 31,770.76, 47,661.42 and 10,989.40

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Solution

The fourth proportional to 31,770.76, 47,661.42 and 10,989.40 is: 16,485.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,770.76 : 47,661.42 = 10,989.40 : x
  2. Step 2: Convert to fraction form
    31,770.76/47,661.42 = 10,989.40/x
  3. Step 3: Cross multiply
    31,770.76x = 47,661.42 × 10,989.40
  4. Step 4: Simplify right side
    31,770.76x = 523,770,408.95
  5. Step 5: Solve for x
    x = 523,770,408.95/31,770.76
  6. Step 6: Final answer
    x = 16,485.93

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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.