Home / 13,638.18-20,454.75-3,776.16

Finding the Fourth Proportional to 13,638.18, 20,454.75 and 3,776.16

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Solution

The fourth proportional to 13,638.18, 20,454.75 and 3,776.16 is: 5,663.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.18 : 20,454.75 = 3,776.16 : x
  2. Step 2: Convert to fraction form
    13,638.18/20,454.75 = 3,776.16/x
  3. Step 3: Cross multiply
    13,638.18x = 20,454.75 × 3,776.16
  4. Step 4: Simplify right side
    13,638.18x = 77,240,408.76
  5. Step 5: Solve for x
    x = 77,240,408.76/13,638.18
  6. Step 6: Final answer
    x = 5,663.54

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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.