Home / 27,631.44-38,130.03-15,693.21

Finding the Fourth Proportional to 27,631.44, 38,130.03 and 15,693.21

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Solution

The fourth proportional to 27,631.44, 38,130.03 and 15,693.21 is: 21,655.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,631.44 : 38,130.03 = 15,693.21 : x
  2. Step 2: Convert to fraction form
    27,631.44/38,130.03 = 15,693.21/x
  3. Step 3: Cross multiply
    27,631.44x = 38,130.03 × 15,693.21
  4. Step 4: Simplify right side
    27,631.44x = 598,382,568.10
  5. Step 5: Solve for x
    x = 598,382,568.10/27,631.44
  6. Step 6: Final answer
    x = 21,655.86

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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.