Home / 22,340.90-30,828.11-13,388.16

Finding the Fourth Proportional to 22,340.90, 30,828.11 and 13,388.16

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Solution

The fourth proportional to 22,340.90, 30,828.11 and 13,388.16 is: 18,474.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,340.90 : 30,828.11 = 13,388.16 : x
  2. Step 2: Convert to fraction form
    22,340.90/30,828.11 = 13,388.16/x
  3. Step 3: Cross multiply
    22,340.90x = 30,828.11 × 13,388.16
  4. Step 4: Simplify right side
    22,340.90x = 412,731,602.24
  5. Step 5: Solve for x
    x = 412,731,602.24/22,340.90
  6. Step 6: Final answer
    x = 18,474.26

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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.