Home / 20,801.52-31,184.04-9,110.80

Finding the Fourth Proportional to 20,801.52, 31,184.04 and 9,110.80

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Solution

The fourth proportional to 20,801.52, 31,184.04 and 9,110.80 is: 13,658.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.52 : 31,184.04 = 9,110.80 : x
  2. Step 2: Convert to fraction form
    20,801.52/31,184.04 = 9,110.80/x
  3. Step 3: Cross multiply
    20,801.52x = 31,184.04 × 9,110.80
  4. Step 4: Simplify right side
    20,801.52x = 284,111,551.63
  5. Step 5: Solve for x
    x = 284,111,551.63/20,801.52
  6. Step 6: Final answer
    x = 13,658.21

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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.