Home / 13,641.48-20,355.84-12,170.52

Finding the Fourth Proportional to 13,641.48, 20,355.84 and 12,170.52

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Solution

The fourth proportional to 13,641.48, 20,355.84 and 12,170.52 is: 18,160.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,641.48 : 20,355.84 = 12,170.52 : x
  2. Step 2: Convert to fraction form
    13,641.48/20,355.84 = 12,170.52/x
  3. Step 3: Cross multiply
    13,641.48x = 20,355.84 × 12,170.52
  4. Step 4: Simplify right side
    13,641.48x = 247,741,157.84
  5. Step 5: Solve for x
    x = 247,741,157.84/13,641.48
  6. Step 6: Final answer
    x = 18,160.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.