Home / 27,938.69-38,555.87-15,191.96

Finding the Fourth Proportional to 27,938.69, 38,555.87 and 15,191.96

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Solution

The fourth proportional to 27,938.69, 38,555.87 and 15,191.96 is: 20,965.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,938.69 : 38,555.87 = 15,191.96 : x
  2. Step 2: Convert to fraction form
    27,938.69/38,555.87 = 15,191.96/x
  3. Step 3: Cross multiply
    27,938.69x = 38,555.87 × 15,191.96
  4. Step 4: Simplify right side
    27,938.69x = 585,738,966.07
  5. Step 5: Solve for x
    x = 585,738,966.07/27,938.69
  6. Step 6: Final answer
    x = 20,965.16

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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.