Home / 21,803.10-32,704.65-18,951.90

Finding the Fourth Proportional to 21,803.10, 32,704.65 and 18,951.90

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Solution

The fourth proportional to 21,803.10, 32,704.65 and 18,951.90 is: 28,427.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,803.10 : 32,704.65 = 18,951.90 : x
  2. Step 2: Convert to fraction form
    21,803.10/32,704.65 = 18,951.90/x
  3. Step 3: Cross multiply
    21,803.10x = 32,704.65 × 18,951.90
  4. Step 4: Simplify right side
    21,803.10x = 619,815,256.34
  5. Step 5: Solve for x
    x = 619,815,256.34/21,803.10
  6. Step 6: Final answer
    x = 28,427.85

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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.