Home / 15,383.84-21,245.28-13,255.04

Finding the Fourth Proportional to 15,383.84, 21,245.28 and 13,255.04

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Solution

The fourth proportional to 15,383.84, 21,245.28 and 13,255.04 is: 18,305.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,383.84 : 21,245.28 = 13,255.04 : x
  2. Step 2: Convert to fraction form
    15,383.84/21,245.28 = 13,255.04/x
  3. Step 3: Cross multiply
    15,383.84x = 21,245.28 × 13,255.04
  4. Step 4: Simplify right side
    15,383.84x = 281,607,036.21
  5. Step 5: Solve for x
    x = 281,607,036.21/15,383.84
  6. Step 6: Final answer
    x = 18,305.38

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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.