Home / 20,941.44-28,899.60-11,510.88

Finding the Fourth Proportional to 20,941.44, 28,899.60 and 11,510.88

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Solution

The fourth proportional to 20,941.44, 28,899.60 and 11,510.88 is: 15,885.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.44 : 28,899.60 = 11,510.88 : x
  2. Step 2: Convert to fraction form
    20,941.44/28,899.60 = 11,510.88/x
  3. Step 3: Cross multiply
    20,941.44x = 28,899.60 × 11,510.88
  4. Step 4: Simplify right side
    20,941.44x = 332,659,827.65
  5. Step 5: Solve for x
    x = 332,659,827.65/20,941.44
  6. Step 6: Final answer
    x = 15,885.24

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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.