Home / 31,515.39-47,278.70-10,456.69

Finding the Fourth Proportional to 31,515.39, 47,278.70 and 10,456.69

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Solution

The fourth proportional to 31,515.39, 47,278.70 and 10,456.69 is: 15,686.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,515.39 : 47,278.70 = 10,456.69 : x
  2. Step 2: Convert to fraction form
    31,515.39/47,278.70 = 10,456.69/x
  3. Step 3: Cross multiply
    31,515.39x = 47,278.70 × 10,456.69
  4. Step 4: Simplify right side
    31,515.39x = 494,378,708.58
  5. Step 5: Solve for x
    x = 494,378,708.58/31,515.39
  6. Step 6: Final answer
    x = 15,686.90

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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.