Home / 20,486.52-28,266.37-12,525.84

Finding the Fourth Proportional to 20,486.52, 28,266.37 and 12,525.84

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Solution

The fourth proportional to 20,486.52, 28,266.37 and 12,525.84 is: 17,282.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.52 : 28,266.37 = 12,525.84 : x
  2. Step 2: Convert to fraction form
    20,486.52/28,266.37 = 12,525.84/x
  3. Step 3: Cross multiply
    20,486.52x = 28,266.37 × 12,525.84
  4. Step 4: Simplify right side
    20,486.52x = 354,059,996.69
  5. Step 5: Solve for x
    x = 354,059,996.69/20,486.52
  6. Step 6: Final answer
    x = 17,282.58

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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.