Home / 27,781.83-38,343.38-15,849.05

Finding the Fourth Proportional to 27,781.83, 38,343.38 and 15,849.05

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Solution

The fourth proportional to 27,781.83, 38,343.38 and 15,849.05 is: 21,874.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,781.83 : 38,343.38 = 15,849.05 : x
  2. Step 2: Convert to fraction form
    27,781.83/38,343.38 = 15,849.05/x
  3. Step 3: Cross multiply
    27,781.83x = 38,343.38 × 15,849.05
  4. Step 4: Simplify right side
    27,781.83x = 607,705,875.83
  5. Step 5: Solve for x
    x = 607,705,875.83/27,781.83
  6. Step 6: Final answer
    x = 21,874.22

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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.