Home / 19,851.81-27,396.21-10,899.99

Finding the Fourth Proportional to 19,851.81, 27,396.21 and 10,899.99

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Solution

The fourth proportional to 19,851.81, 27,396.21 and 10,899.99 is: 15,042.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,851.81 : 27,396.21 = 10,899.99 : x
  2. Step 2: Convert to fraction form
    19,851.81/27,396.21 = 10,899.99/x
  3. Step 3: Cross multiply
    19,851.81x = 27,396.21 × 10,899.99
  4. Step 4: Simplify right side
    19,851.81x = 298,618,415.04
  5. Step 5: Solve for x
    x = 298,618,415.04/19,851.81
  6. Step 6: Final answer
    x = 15,042.38

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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.