Home / 20,486.94-28,272.50-11,534.75

Finding the Fourth Proportional to 20,486.94, 28,272.50 and 11,534.75

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Solution

The fourth proportional to 20,486.94, 28,272.50 and 11,534.75 is: 15,918.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.94 : 28,272.50 = 11,534.75 : x
  2. Step 2: Convert to fraction form
    20,486.94/28,272.50 = 11,534.75/x
  3. Step 3: Cross multiply
    20,486.94x = 28,272.50 × 11,534.75
  4. Step 4: Simplify right side
    20,486.94x = 326,116,219.38
  5. Step 5: Solve for x
    x = 326,116,219.38/20,486.94
  6. Step 6: Final answer
    x = 15,918.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.