Home / 31,969.09-47,951.61-9,780.70

Finding the Fourth Proportional to 31,969.09, 47,951.61 and 9,780.70

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Solution

The fourth proportional to 31,969.09, 47,951.61 and 9,780.70 is: 14,670.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,969.09 : 47,951.61 = 9,780.70 : x
  2. Step 2: Convert to fraction form
    31,969.09/47,951.61 = 9,780.70/x
  3. Step 3: Cross multiply
    31,969.09x = 47,951.61 × 9,780.70
  4. Step 4: Simplify right side
    31,969.09x = 469,000,311.93
  5. Step 5: Solve for x
    x = 469,000,311.93/31,969.09
  6. Step 6: Final answer
    x = 14,670.43

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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.