Home / 27,938.98-38,556-15,192.21

Finding the Fourth Proportional to 27,938.98, 38,556 and 15,192.21

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Solution

The fourth proportional to 27,938.98, 38,556 and 15,192.21 is: 20,965.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,938.98 : 38,556 = 15,192.21 : x
  2. Step 2: Convert to fraction form
    27,938.98/38,556 = 15,192.21/x
  3. Step 3: Cross multiply
    27,938.98x = 38,556 × 15,192.21
  4. Step 4: Simplify right side
    27,938.98x = 585,750,776.47
  5. Step 5: Solve for x
    x = 585,750,776.47/27,938.98
  6. Step 6: Final answer
    x = 20,965.36

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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.