Home / 20,941.50-28,899.27-11,510.67

Finding the Fourth Proportional to 20,941.50, 28,899.27 and 11,510.67

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Solution

The fourth proportional to 20,941.50, 28,899.27 and 11,510.67 is: 15,884.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.50 : 28,899.27 = 11,510.67 : x
  2. Step 2: Convert to fraction form
    20,941.50/28,899.27 = 11,510.67/x
  3. Step 3: Cross multiply
    20,941.50x = 28,899.27 × 11,510.67
  4. Step 4: Simplify right side
    20,941.50x = 332,649,960.21
  5. Step 5: Solve for x
    x = 332,649,960.21/20,941.50
  6. Step 6: Final answer
    x = 15,884.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.