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Finding the Fourth Proportional to 37,310.40, 51,472.12 and 21,391.20

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Solution

The fourth proportional to 37,310.40, 51,472.12 and 21,391.20 is: 29,510.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,310.40 : 51,472.12 = 21,391.20 : x
  2. Step 2: Convert to fraction form
    37,310.40/51,472.12 = 21,391.20/x
  3. Step 3: Cross multiply
    37,310.40x = 51,472.12 × 21,391.20
  4. Step 4: Simplify right side
    37,310.40x = 1,101,050,413.34
  5. Step 5: Solve for x
    x = 1,101,050,413.34/37,310.40
  6. Step 6: Final answer
    x = 29,510.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.