Home / 20,822.96-31,239.04-9,723.60

Finding the Fourth Proportional to 20,822.96, 31,239.04 and 9,723.60

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Solution

The fourth proportional to 20,822.96, 31,239.04 and 9,723.60 is: 14,587.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822.96 : 31,239.04 = 9,723.60 : x
  2. Step 2: Convert to fraction form
    20,822.96/31,239.04 = 9,723.60/x
  3. Step 3: Cross multiply
    20,822.96x = 31,239.04 × 9,723.60
  4. Step 4: Simplify right side
    20,822.96x = 303,755,929.34
  5. Step 5: Solve for x
    x = 303,755,929.34/20,822.96
  6. Step 6: Final answer
    x = 14,587.55

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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.