Home / 27,717.81-38,241.09-15,778.14

Finding the Fourth Proportional to 27,717.81, 38,241.09 and 15,778.14

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Solution

The fourth proportional to 27,717.81, 38,241.09 and 15,778.14 is: 21,768.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,717.81 : 38,241.09 = 15,778.14 : x
  2. Step 2: Convert to fraction form
    27,717.81/38,241.09 = 15,778.14/x
  3. Step 3: Cross multiply
    27,717.81x = 38,241.09 × 15,778.14
  4. Step 4: Simplify right side
    27,717.81x = 603,373,271.77
  5. Step 5: Solve for x
    x = 603,373,271.77/27,717.81
  6. Step 6: Final answer
    x = 21,768.43

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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.