Home / 19,845.32-27,387.77-13,119.28

Finding the Fourth Proportional to 19,845.32, 27,387.77 and 13,119.28

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Solution

The fourth proportional to 19,845.32, 27,387.77 and 13,119.28 is: 18,105.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,845.32 : 27,387.77 = 13,119.28 : x
  2. Step 2: Convert to fraction form
    19,845.32/27,387.77 = 13,119.28/x
  3. Step 3: Cross multiply
    19,845.32x = 27,387.77 × 13,119.28
  4. Step 4: Simplify right side
    19,845.32x = 359,307,689.14
  5. Step 5: Solve for x
    x = 359,307,689.14/19,845.32
  6. Step 6: Final answer
    x = 18,105.42

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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.