Home / 31,430.25-47,151.17-10,371.75

Finding the Fourth Proportional to 31,430.25, 47,151.17 and 10,371.75

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Solution

The fourth proportional to 31,430.25, 47,151.17 and 10,371.75 is: 15,559.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,430.25 : 47,151.17 = 10,371.75 : x
  2. Step 2: Convert to fraction form
    31,430.25/47,151.17 = 10,371.75/x
  3. Step 3: Cross multiply
    31,430.25x = 47,151.17 × 10,371.75
  4. Step 4: Simplify right side
    31,430.25x = 489,040,095.59
  5. Step 5: Solve for x
    x = 489,040,095.59/31,430.25
  6. Step 6: Final answer
    x = 15,559.54

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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.