Home / 28,243.97-38,977.09-15,498.41

Finding the Fourth Proportional to 28,243.97, 38,977.09 and 15,498.41

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Solution

The fourth proportional to 28,243.97, 38,977.09 and 15,498.41 is: 21,388.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243.97 : 38,977.09 = 15,498.41 : x
  2. Step 2: Convert to fraction form
    28,243.97/38,977.09 = 15,498.41/x
  3. Step 3: Cross multiply
    28,243.97x = 38,977.09 × 15,498.41
  4. Step 4: Simplify right side
    28,243.97x = 604,082,980.12
  5. Step 5: Solve for x
    x = 604,082,980.12/28,243.97
  6. Step 6: Final answer
    x = 21,388.04

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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.