Home / 27,938.25-38,554.45-20,800.06

Finding the Fourth Proportional to 27,938.25, 38,554.45 and 20,800.06

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Solution

The fourth proportional to 27,938.25, 38,554.45 and 20,800.06 is: 28,703.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,938.25 : 38,554.45 = 20,800.06 : x
  2. Step 2: Convert to fraction form
    27,938.25/38,554.45 = 20,800.06/x
  3. Step 3: Cross multiply
    27,938.25x = 38,554.45 × 20,800.06
  4. Step 4: Simplify right side
    27,938.25x = 801,934,576.49
  5. Step 5: Solve for x
    x = 801,934,576.49/27,938.25
  6. Step 6: Final answer
    x = 28,703.82

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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.