Home / 27,715.09-38,243.73-15,616.12

Finding the Fourth Proportional to 27,715.09, 38,243.73 and 15,616.12

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Solution

The fourth proportional to 27,715.09, 38,243.73 and 15,616.12 is: 21,548.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,715.09 : 38,243.73 = 15,616.12 : x
  2. Step 2: Convert to fraction form
    27,715.09/38,243.73 = 15,616.12/x
  3. Step 3: Cross multiply
    27,715.09x = 38,243.73 × 15,616.12
  4. Step 4: Simplify right side
    27,715.09x = 597,218,623.75
  5. Step 5: Solve for x
    x = 597,218,623.75/27,715.09
  6. Step 6: Final answer
    x = 21,548.50

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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.