Home / 27,884.07-38,470.55-15,938.91

Finding the Fourth Proportional to 27,884.07, 38,470.55 and 15,938.91

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Solution

The fourth proportional to 27,884.07, 38,470.55 and 15,938.91 is: 21,990.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,884.07 : 38,470.55 = 15,938.91 : x
  2. Step 2: Convert to fraction form
    27,884.07/38,470.55 = 15,938.91/x
  3. Step 3: Cross multiply
    27,884.07x = 38,470.55 × 15,938.91
  4. Step 4: Simplify right side
    27,884.07x = 613,178,554.41
  5. Step 5: Solve for x
    x = 613,178,554.41/27,884.07
  6. Step 6: Final answer
    x = 21,990.28

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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.