Home / 13,785.75-20,659.98-9,881.55

Finding the Fourth Proportional to 13,785.75, 20,659.98 and 9,881.55

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Solution

The fourth proportional to 13,785.75, 20,659.98 and 9,881.55 is: 14,808.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.75 : 20,659.98 = 9,881.55 : x
  2. Step 2: Convert to fraction form
    13,785.75/20,659.98 = 9,881.55/x
  3. Step 3: Cross multiply
    13,785.75x = 20,659.98 × 9,881.55
  4. Step 4: Simplify right side
    13,785.75x = 204,152,625.37
  5. Step 5: Solve for x
    x = 204,152,625.37/13,785.75
  6. Step 6: Final answer
    x = 14,808.96

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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.