Home / 20,265.93-27,979.80-13,903.17

Finding the Fourth Proportional to 20,265.93, 27,979.80 and 13,903.17

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Solution

The fourth proportional to 20,265.93, 27,979.80 and 13,903.17 is: 19,195.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,265.93 : 27,979.80 = 13,903.17 : x
  2. Step 2: Convert to fraction form
    20,265.93/27,979.80 = 13,903.17/x
  3. Step 3: Cross multiply
    20,265.93x = 27,979.80 × 13,903.17
  4. Step 4: Simplify right side
    20,265.93x = 389,007,915.97
  5. Step 5: Solve for x
    x = 389,007,915.97/20,265.93
  6. Step 6: Final answer
    x = 19,195.17

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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.