Home / 27,617.72-38,112.51-15,681.06

Finding the Fourth Proportional to 27,617.72, 38,112.51 and 15,681.06

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Solution

The fourth proportional to 27,617.72, 38,112.51 and 15,681.06 is: 21,639.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,617.72 : 38,112.51 = 15,681.06 : x
  2. Step 2: Convert to fraction form
    27,617.72/38,112.51 = 15,681.06/x
  3. Step 3: Cross multiply
    27,617.72x = 38,112.51 × 15,681.06
  4. Step 4: Simplify right side
    27,617.72x = 597,644,573.97
  5. Step 5: Solve for x
    x = 597,644,573.97/27,617.72
  6. Step 6: Final answer
    x = 21,639.89

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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.