Home / 27,787.58-38,348.99-15,851.18

Finding the Fourth Proportional to 27,787.58, 38,348.99 and 15,851.18

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Solution

The fourth proportional to 27,787.58, 38,348.99 and 15,851.18 is: 21,875.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,787.58 : 38,348.99 = 15,851.18 : x
  2. Step 2: Convert to fraction form
    27,787.58/38,348.99 = 15,851.18/x
  3. Step 3: Cross multiply
    27,787.58x = 38,348.99 × 15,851.18
  4. Step 4: Simplify right side
    27,787.58x = 607,876,743.31
  5. Step 5: Solve for x
    x = 607,876,743.31/27,787.58
  6. Step 6: Final answer
    x = 21,875.84

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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.