Home / 28,109.82-38,809.49-17,515.02

Finding the Fourth Proportional to 28,109.82, 38,809.49 and 17,515.02

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Solution

The fourth proportional to 28,109.82, 38,809.49 and 17,515.02 is: 24,181.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,109.82 : 38,809.49 = 17,515.02 : x
  2. Step 2: Convert to fraction form
    28,109.82/38,809.49 = 17,515.02/x
  3. Step 3: Cross multiply
    28,109.82x = 38,809.49 × 17,515.02
  4. Step 4: Simplify right side
    28,109.82x = 679,748,993.54
  5. Step 5: Solve for x
    x = 679,748,993.54/28,109.82
  6. Step 6: Final answer
    x = 24,181.90

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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.