Home / 20,039.18-27,648.56-12,486.74

Finding the Fourth Proportional to 20,039.18, 27,648.56 and 12,486.74

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Solution

The fourth proportional to 20,039.18, 27,648.56 and 12,486.74 is: 17,228.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,039.18 : 27,648.56 = 12,486.74 : x
  2. Step 2: Convert to fraction form
    20,039.18/27,648.56 = 12,486.74/x
  3. Step 3: Cross multiply
    20,039.18x = 27,648.56 × 12,486.74
  4. Step 4: Simplify right side
    20,039.18x = 345,240,273.07
  5. Step 5: Solve for x
    x = 345,240,273.07/20,039.18
  6. Step 6: Final answer
    x = 17,228.27

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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.