Home / 31,438.19-47,158.38-10,378.73

Finding the Fourth Proportional to 31,438.19, 47,158.38 and 10,378.73

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Solution

The fourth proportional to 31,438.19, 47,158.38 and 10,378.73 is: 15,568.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,438.19 : 47,158.38 = 10,378.73 : x
  2. Step 2: Convert to fraction form
    31,438.19/47,158.38 = 10,378.73/x
  3. Step 3: Cross multiply
    31,438.19x = 47,158.38 × 10,378.73
  4. Step 4: Simplify right side
    31,438.19x = 489,443,857.47
  5. Step 5: Solve for x
    x = 489,443,857.47/31,438.19
  6. Step 6: Final answer
    x = 15,568.45

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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.