Home / 21,699.18-32,550.39-9,217.80

Finding the Fourth Proportional to 21,699.18, 32,550.39 and 9,217.80

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Solution

The fourth proportional to 21,699.18, 32,550.39 and 9,217.80 is: 13,827.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,699.18 : 32,550.39 = 9,217.80 : x
  2. Step 2: Convert to fraction form
    21,699.18/32,550.39 = 9,217.80/x
  3. Step 3: Cross multiply
    21,699.18x = 32,550.39 × 9,217.80
  4. Step 4: Simplify right side
    21,699.18x = 300,042,984.94
  5. Step 5: Solve for x
    x = 300,042,984.94/21,699.18
  6. Step 6: Final answer
    x = 13,827.39

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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.