Home / 19,731.36-27,229.68-11,348.40

Finding the Fourth Proportional to 19,731.36, 27,229.68 and 11,348.40

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Solution

The fourth proportional to 19,731.36, 27,229.68 and 11,348.40 is: 15,661.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,731.36 : 27,229.68 = 11,348.40 : x
  2. Step 2: Convert to fraction form
    19,731.36/27,229.68 = 11,348.40/x
  3. Step 3: Cross multiply
    19,731.36x = 27,229.68 × 11,348.40
  4. Step 4: Simplify right side
    19,731.36x = 309,013,300.51
  5. Step 5: Solve for x
    x = 309,013,300.51/19,731.36
  6. Step 6: Final answer
    x = 15,661.02

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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.