Home / 31,964.60-47,942.70-9,780.20

Finding the Fourth Proportional to 31,964.60, 47,942.70 and 9,780.20

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Solution

The fourth proportional to 31,964.60, 47,942.70 and 9,780.20 is: 14,669.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,964.60 : 47,942.70 = 9,780.20 : x
  2. Step 2: Convert to fraction form
    31,964.60/47,942.70 = 9,780.20/x
  3. Step 3: Cross multiply
    31,964.60x = 47,942.70 × 9,780.20
  4. Step 4: Simplify right side
    31,964.60x = 468,889,194.54
  5. Step 5: Solve for x
    x = 468,889,194.54/31,964.60
  6. Step 6: Final answer
    x = 14,669.01

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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.