Home / 13,750.39-20,611.11-8,756.56

Finding the Fourth Proportional to 13,750.39, 20,611.11 and 8,756.56

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Solution

The fourth proportional to 13,750.39, 20,611.11 and 8,756.56 is: 13,125.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.39 : 20,611.11 = 8,756.56 : x
  2. Step 2: Convert to fraction form
    13,750.39/20,611.11 = 8,756.56/x
  3. Step 3: Cross multiply
    13,750.39x = 20,611.11 × 8,756.56
  4. Step 4: Simplify right side
    13,750.39x = 180,482,421.38
  5. Step 5: Solve for x
    x = 180,482,421.38/13,750.39
  6. Step 6: Final answer
    x = 13,125.62

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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.