Home / 13,220.28-18,244.38-7,252.32

Finding the Fourth Proportional to 13,220.28, 18,244.38 and 7,252.32

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Solution

The fourth proportional to 13,220.28, 18,244.38 and 7,252.32 is: 10,008.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.28 : 18,244.38 = 7,252.32 : x
  2. Step 2: Convert to fraction form
    13,220.28/18,244.38 = 7,252.32/x
  3. Step 3: Cross multiply
    13,220.28x = 18,244.38 × 7,252.32
  4. Step 4: Simplify right side
    13,220.28x = 132,314,081.96
  5. Step 5: Solve for x
    x = 132,314,081.96/13,220.28
  6. Step 6: Final answer
    x = 10,008.42

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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.