Home / 20,385.09-30,577.74-9,284.04

Finding the Fourth Proportional to 20,385.09, 30,577.74 and 9,284.04

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Solution

The fourth proportional to 20,385.09, 30,577.74 and 9,284.04 is: 13,926.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,385.09 : 30,577.74 = 9,284.04 : x
  2. Step 2: Convert to fraction form
    20,385.09/30,577.74 = 9,284.04/x
  3. Step 3: Cross multiply
    20,385.09x = 30,577.74 × 9,284.04
  4. Step 4: Simplify right side
    20,385.09x = 283,884,961.27
  5. Step 5: Solve for x
    x = 283,884,961.27/20,385.09
  6. Step 6: Final answer
    x = 13,926.11

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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.