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Finding the Fourth Proportional to 15,310.21, 22,943.41 and 8,722.80

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Solution

The fourth proportional to 15,310.21, 22,943.41 and 8,722.80 is: 13,071.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,310.21 : 22,943.41 = 8,722.80 : x
  2. Step 2: Convert to fraction form
    15,310.21/22,943.41 = 8,722.80/x
  3. Step 3: Cross multiply
    15,310.21x = 22,943.41 × 8,722.80
  4. Step 4: Simplify right side
    15,310.21x = 200,130,776.75
  5. Step 5: Solve for x
    x = 200,130,776.75/15,310.21
  6. Step 6: Final answer
    x = 13,071.72

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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.