Home / 15,844.20-21,864-9,297.60

Finding the Fourth Proportional to 15,844.20, 21,864 and 9,297.60

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Solution

The fourth proportional to 15,844.20, 21,864 and 9,297.60 is: 12,830.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,844.20 : 21,864 = 9,297.60 : x
  2. Step 2: Convert to fraction form
    15,844.20/21,864 = 9,297.60/x
  3. Step 3: Cross multiply
    15,844.20x = 21,864 × 9,297.60
  4. Step 4: Simplify right side
    15,844.20x = 203,282,726.40
  5. Step 5: Solve for x
    x = 203,282,726.40/15,844.20
  6. Step 6: Final answer
    x = 12,830.10

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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.