Home / 20,077.94-27,720.27-12,911.19

Finding the Fourth Proportional to 20,077.94, 27,720.27 and 12,911.19

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Solution

The fourth proportional to 20,077.94, 27,720.27 and 12,911.19 is: 17,825.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.94 : 27,720.27 = 12,911.19 : x
  2. Step 2: Convert to fraction form
    20,077.94/27,720.27 = 12,911.19/x
  3. Step 3: Cross multiply
    20,077.94x = 27,720.27 × 12,911.19
  4. Step 4: Simplify right side
    20,077.94x = 357,901,672.82
  5. Step 5: Solve for x
    x = 357,901,672.82/20,077.94
  6. Step 6: Final answer
    x = 17,825.62

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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.