Home / 20,109.74-27,733.25-12,556.76

Finding the Fourth Proportional to 20,109.74, 27,733.25 and 12,556.76

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Solution

The fourth proportional to 20,109.74, 27,733.25 and 12,556.76 is: 17,316.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.74 : 27,733.25 = 12,556.76 : x
  2. Step 2: Convert to fraction form
    20,109.74/27,733.25 = 12,556.76/x
  3. Step 3: Cross multiply
    20,109.74x = 27,733.25 × 12,556.76
  4. Step 4: Simplify right side
    20,109.74x = 348,239,657.00
  5. Step 5: Solve for x
    x = 348,239,657.00/20,109.74
  6. Step 6: Final answer
    x = 17,316.97

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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.