Home / 13,461.15-20,191.73-12,856.35

Finding the Fourth Proportional to 13,461.15, 20,191.73 and 12,856.35

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Solution

The fourth proportional to 13,461.15, 20,191.73 and 12,856.35 is: 19,284.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,461.15 : 20,191.73 = 12,856.35 : x
  2. Step 2: Convert to fraction form
    13,461.15/20,191.73 = 12,856.35/x
  3. Step 3: Cross multiply
    13,461.15x = 20,191.73 × 12,856.35
  4. Step 4: Simplify right side
    13,461.15x = 259,591,883.70
  5. Step 5: Solve for x
    x = 259,591,883.70/13,461.15
  6. Step 6: Final answer
    x = 19,284.53

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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.