Home / 19,905.88-27,438.22-15,110.20

Finding the Fourth Proportional to 19,905.88, 27,438.22 and 15,110.20

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Solution

The fourth proportional to 19,905.88, 27,438.22 and 15,110.20 is: 20,827.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.88 : 27,438.22 = 15,110.20 : x
  2. Step 2: Convert to fraction form
    19,905.88/27,438.22 = 15,110.20/x
  3. Step 3: Cross multiply
    19,905.88x = 27,438.22 × 15,110.20
  4. Step 4: Simplify right side
    19,905.88x = 414,596,991.84
  5. Step 5: Solve for x
    x = 414,596,991.84/19,905.88
  6. Step 6: Final answer
    x = 20,827.87

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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.