Home / 20,259.92-27,971.53-13,897.17

Finding the Fourth Proportional to 20,259.92, 27,971.53 and 13,897.17

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Solution

The fourth proportional to 20,259.92, 27,971.53 and 13,897.17 is: 19,186.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.92 : 27,971.53 = 13,897.17 : x
  2. Step 2: Convert to fraction form
    20,259.92/27,971.53 = 13,897.17/x
  3. Step 3: Cross multiply
    20,259.92x = 27,971.53 × 13,897.17
  4. Step 4: Simplify right side
    20,259.92x = 388,725,072.83
  5. Step 5: Solve for x
    x = 388,725,072.83/20,259.92
  6. Step 6: Final answer
    x = 19,186.90

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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.