Home / 34,721.20-47,915.12-18,805.68

Finding the Fourth Proportional to 34,721.20, 47,915.12 and 18,805.68

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Solution

The fourth proportional to 34,721.20, 47,915.12 and 18,805.68 is: 25,951.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,721.20 : 47,915.12 = 18,805.68 : x
  2. Step 2: Convert to fraction form
    34,721.20/47,915.12 = 18,805.68/x
  3. Step 3: Cross multiply
    34,721.20x = 47,915.12 × 18,805.68
  4. Step 4: Simplify right side
    34,721.20x = 901,076,413.88
  5. Step 5: Solve for x
    x = 901,076,413.88/34,721.20
  6. Step 6: Final answer
    x = 25,951.76

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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.