Home / 21,793.44-32,686.21-13,872.45

Finding the Fourth Proportional to 21,793.44, 32,686.21 and 13,872.45

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Solution

The fourth proportional to 21,793.44, 32,686.21 and 13,872.45 is: 20,806.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,793.44 : 32,686.21 = 13,872.45 : x
  2. Step 2: Convert to fraction form
    21,793.44/32,686.21 = 13,872.45/x
  3. Step 3: Cross multiply
    21,793.44x = 32,686.21 × 13,872.45
  4. Step 4: Simplify right side
    21,793.44x = 453,437,813.91
  5. Step 5: Solve for x
    x = 453,437,813.91/21,793.44
  6. Step 6: Final answer
    x = 20,806.16

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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.