Home / 15,388.20-21,305.70-14,610.60

Finding the Fourth Proportional to 15,388.20, 21,305.70 and 14,610.60

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Solution

The fourth proportional to 15,388.20, 21,305.70 and 14,610.60 is: 20,229.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.20 : 21,305.70 = 14,610.60 : x
  2. Step 2: Convert to fraction form
    15,388.20/21,305.70 = 14,610.60/x
  3. Step 3: Cross multiply
    15,388.20x = 21,305.70 × 14,610.60
  4. Step 4: Simplify right side
    15,388.20x = 311,289,060.42
  5. Step 5: Solve for x
    x = 311,289,060.42/15,388.20
  6. Step 6: Final answer
    x = 20,229.08

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Half scale
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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.