Home / 21,204.19-31,801.42-9,520.75

Finding the Fourth Proportional to 21,204.19, 31,801.42 and 9,520.75

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Solution

The fourth proportional to 21,204.19, 31,801.42 and 9,520.75 is: 14,278.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.19 : 31,801.42 = 9,520.75 : x
  2. Step 2: Convert to fraction form
    21,204.19/31,801.42 = 9,520.75/x
  3. Step 3: Cross multiply
    21,204.19x = 31,801.42 × 9,520.75
  4. Step 4: Simplify right side
    21,204.19x = 302,773,369.47
  5. Step 5: Solve for x
    x = 302,773,369.47/21,204.19
  6. Step 6: Final answer
    x = 14,278.94

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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.