Home / 18,117.84-27,176.55-11,917.02

Finding the Fourth Proportional to 18,117.84, 27,176.55 and 11,917.02

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Solution

The fourth proportional to 18,117.84, 27,176.55 and 11,917.02 is: 17,875.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.84 : 27,176.55 = 11,917.02 : x
  2. Step 2: Convert to fraction form
    18,117.84/27,176.55 = 11,917.02/x
  3. Step 3: Cross multiply
    18,117.84x = 27,176.55 × 11,917.02
  4. Step 4: Simplify right side
    18,117.84x = 323,863,489.88
  5. Step 5: Solve for x
    x = 323,863,489.88/18,117.84
  6. Step 6: Final answer
    x = 17,875.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.