Home / 15,388.63-21,236.24-8,315.03

Finding the Fourth Proportional to 15,388.63, 21,236.24 and 8,315.03

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Solution

The fourth proportional to 15,388.63, 21,236.24 and 8,315.03 is: 11,474.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.63 : 21,236.24 = 8,315.03 : x
  2. Step 2: Convert to fraction form
    15,388.63/21,236.24 = 8,315.03/x
  3. Step 3: Cross multiply
    15,388.63x = 21,236.24 × 8,315.03
  4. Step 4: Simplify right side
    15,388.63x = 176,580,046.57
  5. Step 5: Solve for x
    x = 176,580,046.57/15,388.63
  6. Step 6: Final answer
    x = 11,474.71

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Double 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.