Home / 20,909.10-31,363.47-9,222.33

Finding the Fourth Proportional to 20,909.10, 31,363.47 and 9,222.33

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Solution

The fourth proportional to 20,909.10, 31,363.47 and 9,222.33 is: 13,833.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,909.10 : 31,363.47 = 9,222.33 : x
  2. Step 2: Convert to fraction form
    20,909.10/31,363.47 = 9,222.33/x
  3. Step 3: Cross multiply
    20,909.10x = 31,363.47 × 9,222.33
  4. Step 4: Simplify right side
    20,909.10x = 289,244,270.29
  5. Step 5: Solve for x
    x = 289,244,270.29/20,909.10
  6. Step 6: Final answer
    x = 13,833.42

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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.