Home / 19,868.13-27,418.49-10,916.21

Finding the Fourth Proportional to 19,868.13, 27,418.49 and 10,916.21

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Solution

The fourth proportional to 19,868.13, 27,418.49 and 10,916.21 is: 15,064.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,868.13 : 27,418.49 = 10,916.21 : x
  2. Step 2: Convert to fraction form
    19,868.13/27,418.49 = 10,916.21/x
  3. Step 3: Cross multiply
    19,868.13x = 27,418.49 × 10,916.21
  4. Step 4: Simplify right side
    19,868.13x = 299,305,857.63
  5. Step 5: Solve for x
    x = 299,305,857.63/19,868.13
  6. Step 6: Final answer
    x = 15,064.63

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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.