Home / 27,001.68-40,435.56-18,690

Finding the Fourth Proportional to 27,001.68, 40,435.56 and 18,690

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Solution

The fourth proportional to 27,001.68, 40,435.56 and 18,690 is: 27,988.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,001.68 : 40,435.56 = 18,690 : x
  2. Step 2: Convert to fraction form
    27,001.68/40,435.56 = 18,690/x
  3. Step 3: Cross multiply
    27,001.68x = 40,435.56 × 18,690
  4. Step 4: Simplify right side
    27,001.68x = 755,740,616.40
  5. Step 5: Solve for x
    x = 755,740,616.40/27,001.68
  6. Step 6: Final answer
    x = 27,988.65

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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.