Home / 19,827.18-27,343.40-13,119.57

Finding the Fourth Proportional to 19,827.18, 27,343.40 and 13,119.57

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Solution

The fourth proportional to 19,827.18, 27,343.40 and 13,119.57 is: 18,093.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,827.18 : 27,343.40 = 13,119.57 : x
  2. Step 2: Convert to fraction form
    19,827.18/27,343.40 = 13,119.57/x
  3. Step 3: Cross multiply
    19,827.18x = 27,343.40 × 13,119.57
  4. Step 4: Simplify right side
    19,827.18x = 358,733,584.74
  5. Step 5: Solve for x
    x = 358,733,584.74/19,827.18
  6. Step 6: Final answer
    x = 18,093.02

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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.