Home / 27,619.44-38,113.47-15,681.21

Finding the Fourth Proportional to 27,619.44, 38,113.47 and 15,681.21

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Solution

The fourth proportional to 27,619.44, 38,113.47 and 15,681.21 is: 21,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,619.44 : 38,113.47 = 15,681.21 : x
  2. Step 2: Convert to fraction form
    27,619.44/38,113.47 = 15,681.21/x
  3. Step 3: Cross multiply
    27,619.44x = 38,113.47 × 15,681.21
  4. Step 4: Simplify right side
    27,619.44x = 597,665,326.90
  5. Step 5: Solve for x
    x = 597,665,326.90/27,619.44
  6. Step 6: Final answer
    x = 21,639.30

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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.