Home / 31,438.95-47,164.25-10,380.46

Finding the Fourth Proportional to 31,438.95, 47,164.25 and 10,380.46

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Solution

The fourth proportional to 31,438.95, 47,164.25 and 10,380.46 is: 15,572.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,438.95 : 47,164.25 = 10,380.46 : x
  2. Step 2: Convert to fraction form
    31,438.95/47,164.25 = 10,380.46/x
  3. Step 3: Cross multiply
    31,438.95x = 47,164.25 × 10,380.46
  4. Step 4: Simplify right side
    31,438.95x = 489,586,440.74
  5. Step 5: Solve for x
    x = 489,586,440.74/31,438.95
  6. Step 6: Final answer
    x = 15,572.61

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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.