Home / 13,256.38-19,885.20-7,408.54

Finding the Fourth Proportional to 13,256.38, 19,885.20 and 7,408.54

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Solution

The fourth proportional to 13,256.38, 19,885.20 and 7,408.54 is: 11,113.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,256.38 : 19,885.20 = 7,408.54 : x
  2. Step 2: Convert to fraction form
    13,256.38/19,885.20 = 7,408.54/x
  3. Step 3: Cross multiply
    13,256.38x = 19,885.20 × 7,408.54
  4. Step 4: Simplify right side
    13,256.38x = 147,320,299.61
  5. Step 5: Solve for x
    x = 147,320,299.61/13,256.38
  6. Step 6: Final answer
    x = 11,113.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.