Home / 20,798.12-31,179.49-9,102.60

Finding the Fourth Proportional to 20,798.12, 31,179.49 and 9,102.60

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Solution

The fourth proportional to 20,798.12, 31,179.49 and 9,102.60 is: 13,646.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.12 : 31,179.49 = 9,102.60 : x
  2. Step 2: Convert to fraction form
    20,798.12/31,179.49 = 9,102.60/x
  3. Step 3: Cross multiply
    20,798.12x = 31,179.49 × 9,102.60
  4. Step 4: Simplify right side
    20,798.12x = 283,814,425.67
  5. Step 5: Solve for x
    x = 283,814,425.67/20,798.12
  6. Step 6: Final answer
    x = 13,646.16

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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.