Home / 13,220.64-18,244.90-7,252.25

Finding the Fourth Proportional to 13,220.64, 18,244.90 and 7,252.25

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Solution

The fourth proportional to 13,220.64, 18,244.90 and 7,252.25 is: 10,008.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.64 : 18,244.90 = 7,252.25 : x
  2. Step 2: Convert to fraction form
    13,220.64/18,244.90 = 7,252.25/x
  3. Step 3: Cross multiply
    13,220.64x = 18,244.90 × 7,252.25
  4. Step 4: Simplify right side
    13,220.64x = 132,316,576.03
  5. Step 5: Solve for x
    x = 132,316,576.03/13,220.64
  6. Step 6: Final answer
    x = 10,008.33

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Half scale
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Double scale
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Similar ratio
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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.