Home / 20,510.44-30,756.03-12,191.56

Finding the Fourth Proportional to 20,510.44, 30,756.03 and 12,191.56

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Solution

The fourth proportional to 20,510.44, 30,756.03 and 12,191.56 is: 18,281.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510.44 : 30,756.03 = 12,191.56 : x
  2. Step 2: Convert to fraction form
    20,510.44/30,756.03 = 12,191.56/x
  3. Step 3: Cross multiply
    20,510.44x = 30,756.03 × 12,191.56
  4. Step 4: Simplify right side
    20,510.44x = 374,963,985.11
  5. Step 5: Solve for x
    x = 374,963,985.11/20,510.44
  6. Step 6: Final answer
    x = 18,281.62

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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.