Home / 27,636.82-38,139.83-15,702.18

Finding the Fourth Proportional to 27,636.82, 38,139.83 and 15,702.18

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Solution

The fourth proportional to 27,636.82, 38,139.83 and 15,702.18 is: 21,669.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,636.82 : 38,139.83 = 15,702.18 : x
  2. Step 2: Convert to fraction form
    27,636.82/38,139.83 = 15,702.18/x
  3. Step 3: Cross multiply
    27,636.82x = 38,139.83 × 15,702.18
  4. Step 4: Simplify right side
    27,636.82x = 598,878,515.08
  5. Step 5: Solve for x
    x = 598,878,515.08/27,636.82
  6. Step 6: Final answer
    x = 21,669.59

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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.