Home / 20,260.05-27,971.18-13,897.10

Finding the Fourth Proportional to 20,260.05, 27,971.18 and 13,897.10

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Solution

The fourth proportional to 20,260.05, 27,971.18 and 13,897.10 is: 19,186.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.05 : 27,971.18 = 13,897.10 : x
  2. Step 2: Convert to fraction form
    20,260.05/27,971.18 = 13,897.10/x
  3. Step 3: Cross multiply
    20,260.05x = 27,971.18 × 13,897.10
  4. Step 4: Simplify right side
    20,260.05x = 388,718,076.24
  5. Step 5: Solve for x
    x = 388,718,076.24/20,260.05
  6. Step 6: Final answer
    x = 19,186.43

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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.