Home / 15,521.44-21,372.96-13,903.12

Finding the Fourth Proportional to 15,521.44, 21,372.96 and 13,903.12

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Solution

The fourth proportional to 15,521.44, 21,372.96 and 13,903.12 is: 19,144.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,521.44 : 21,372.96 = 13,903.12 : x
  2. Step 2: Convert to fraction form
    15,521.44/21,372.96 = 13,903.12/x
  3. Step 3: Cross multiply
    15,521.44x = 21,372.96 × 13,903.12
  4. Step 4: Simplify right side
    15,521.44x = 297,150,827.64
  5. Step 5: Solve for x
    x = 297,150,827.64/15,521.44
  6. Step 6: Final answer
    x = 19,144.54

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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.