Home / 31,530-47,290.14-10,479.18

Finding the Fourth Proportional to 31,530, 47,290.14 and 10,479.18

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Solution

The fourth proportional to 31,530, 47,290.14 and 10,479.18 is: 15,717.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,530 : 47,290.14 = 10,479.18 : x
  2. Step 2: Convert to fraction form
    31,530/47,290.14 = 10,479.18/x
  3. Step 3: Cross multiply
    31,530x = 47,290.14 × 10,479.18
  4. Step 4: Simplify right side
    31,530x = 495,561,889.29
  5. Step 5: Solve for x
    x = 495,561,889.29/31,530
  6. Step 6: Final answer
    x = 15,717.15

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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.