Home / 20,108.39-27,740.48-12,556.59

Finding the Fourth Proportional to 20,108.39, 27,740.48 and 12,556.59

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Solution

The fourth proportional to 20,108.39, 27,740.48 and 12,556.59 is: 17,322.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.39 : 27,740.48 = 12,556.59 : x
  2. Step 2: Convert to fraction form
    20,108.39/27,740.48 = 12,556.59/x
  3. Step 3: Cross multiply
    20,108.39x = 27,740.48 × 12,556.59
  4. Step 4: Simplify right side
    20,108.39x = 348,325,666.95
  5. Step 5: Solve for x
    x = 348,325,666.95/20,108.39
  6. Step 6: Final answer
    x = 17,322.41

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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.