Home / 21,453.20-32,266.20-19,206.80

Finding the Fourth Proportional to 21,453.20, 32,266.20 and 19,206.80

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Solution

The fourth proportional to 21,453.20, 32,266.20 and 19,206.80 is: 28,887.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,453.20 : 32,266.20 = 19,206.80 : x
  2. Step 2: Convert to fraction form
    21,453.20/32,266.20 = 19,206.80/x
  3. Step 3: Cross multiply
    21,453.20x = 32,266.20 × 19,206.80
  4. Step 4: Simplify right side
    21,453.20x = 619,730,450.16
  5. Step 5: Solve for x
    x = 619,730,450.16/21,453.20
  6. Step 6: Final answer
    x = 28,887.55

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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.