Home / 28,107.30-38,787.42-15,359.92

Finding the Fourth Proportional to 28,107.30, 38,787.42 and 15,359.92

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Solution

The fourth proportional to 28,107.30, 38,787.42 and 15,359.92 is: 21,196.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107.30 : 38,787.42 = 15,359.92 : x
  2. Step 2: Convert to fraction form
    28,107.30/38,787.42 = 15,359.92/x
  3. Step 3: Cross multiply
    28,107.30x = 38,787.42 × 15,359.92
  4. Step 4: Simplify right side
    28,107.30x = 595,771,668.21
  5. Step 5: Solve for x
    x = 595,771,668.21/28,107.30
  6. Step 6: Final answer
    x = 21,196.33

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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.