Home / 27,781.68-38,341.78-15,847.94

Finding the Fourth Proportional to 27,781.68, 38,341.78 and 15,847.94

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Solution

The fourth proportional to 27,781.68, 38,341.78 and 15,847.94 is: 21,871.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,781.68 : 38,341.78 = 15,847.94 : x
  2. Step 2: Convert to fraction form
    27,781.68/38,341.78 = 15,847.94/x
  3. Step 3: Cross multiply
    27,781.68x = 38,341.78 × 15,847.94
  4. Step 4: Simplify right side
    27,781.68x = 607,638,228.93
  5. Step 5: Solve for x
    x = 607,638,228.93/27,781.68
  6. Step 6: Final answer
    x = 21,871.90

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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.