Home / 27,857.41-38,445.86-15,918.44

Finding the Fourth Proportional to 27,857.41, 38,445.86 and 15,918.44

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Solution

The fourth proportional to 27,857.41, 38,445.86 and 15,918.44 is: 21,968.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,857.41 : 38,445.86 = 15,918.44 : x
  2. Step 2: Convert to fraction form
    27,857.41/38,445.86 = 15,918.44/x
  3. Step 3: Cross multiply
    27,857.41x = 38,445.86 × 15,918.44
  4. Step 4: Simplify right side
    27,857.41x = 611,997,963.23
  5. Step 5: Solve for x
    x = 611,997,963.23/27,857.41
  6. Step 6: Final answer
    x = 21,968.95

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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.