Home / 31,438.69-47,163.88-10,380.19

Finding the Fourth Proportional to 31,438.69, 47,163.88 and 10,380.19

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Solution

The fourth proportional to 31,438.69, 47,163.88 and 10,380.19 is: 15,572.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,438.69 : 47,163.88 = 10,380.19 : x
  2. Step 2: Convert to fraction form
    31,438.69/47,163.88 = 10,380.19/x
  3. Step 3: Cross multiply
    31,438.69x = 47,163.88 × 10,380.19
  4. Step 4: Simplify right side
    31,438.69x = 489,570,035.54
  5. Step 5: Solve for x
    x = 489,570,035.54/31,438.69
  6. Step 6: Final answer
    x = 15,572.21

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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.