Home / 15,995.20-22,072.80-9,276.40

Finding the Fourth Proportional to 15,995.20, 22,072.80 and 9,276.40

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Solution

The fourth proportional to 15,995.20, 22,072.80 and 9,276.40 is: 12,801.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,995.20 : 22,072.80 = 9,276.40 : x
  2. Step 2: Convert to fraction form
    15,995.20/22,072.80 = 9,276.40/x
  3. Step 3: Cross multiply
    15,995.20x = 22,072.80 × 9,276.40
  4. Step 4: Simplify right side
    15,995.20x = 204,756,121.92
  5. Step 5: Solve for x
    x = 204,756,121.92/15,995.20
  6. Step 6: Final answer
    x = 12,801.10

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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.