Home / 19,860.89-27,408.11-10,908.16

Finding the Fourth Proportional to 19,860.89, 27,408.11 and 10,908.16

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Solution

The fourth proportional to 19,860.89, 27,408.11 and 10,908.16 is: 15,053.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.89 : 27,408.11 = 10,908.16 : x
  2. Step 2: Convert to fraction form
    19,860.89/27,408.11 = 10,908.16/x
  3. Step 3: Cross multiply
    19,860.89x = 27,408.11 × 10,908.16
  4. Step 4: Simplify right side
    19,860.89x = 298,971,926.12
  5. Step 5: Solve for x
    x = 298,971,926.12/19,860.89
  6. Step 6: Final answer
    x = 15,053.30

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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.