Home / 31,678.74-47,528.68-10,620.88

Finding the Fourth Proportional to 31,678.74, 47,528.68 and 10,620.88

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Solution

The fourth proportional to 31,678.74, 47,528.68 and 10,620.88 is: 15,934.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,678.74 : 47,528.68 = 10,620.88 : x
  2. Step 2: Convert to fraction form
    31,678.74/47,528.68 = 10,620.88/x
  3. Step 3: Cross multiply
    31,678.74x = 47,528.68 × 10,620.88
  4. Step 4: Simplify right side
    31,678.74x = 504,796,406.84
  5. Step 5: Solve for x
    x = 504,796,406.84/31,678.74
  6. Step 6: Final answer
    x = 15,934.86

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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.