Home / 21,769.80-32,589.90-13,000.20

Finding the Fourth Proportional to 21,769.80, 32,589.90 and 13,000.20

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Solution

The fourth proportional to 21,769.80, 32,589.90 and 13,000.20 is: 19,461.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,769.80 : 32,589.90 = 13,000.20 : x
  2. Step 2: Convert to fraction form
    21,769.80/32,589.90 = 13,000.20/x
  3. Step 3: Cross multiply
    21,769.80x = 32,589.90 × 13,000.20
  4. Step 4: Simplify right side
    21,769.80x = 423,675,217.98
  5. Step 5: Solve for x
    x = 423,675,217.98/21,769.80
  6. Step 6: Final answer
    x = 19,461.60

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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.