Home / 15,850.73-21,874.03-8,681.32

Finding the Fourth Proportional to 15,850.73, 21,874.03 and 8,681.32

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Solution

The fourth proportional to 15,850.73, 21,874.03 and 8,681.32 is: 11,980.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,850.73 : 21,874.03 = 8,681.32 : x
  2. Step 2: Convert to fraction form
    15,850.73/21,874.03 = 8,681.32/x
  3. Step 3: Cross multiply
    15,850.73x = 21,874.03 × 8,681.32
  4. Step 4: Simplify right side
    15,850.73x = 189,895,454.12
  5. Step 5: Solve for x
    x = 189,895,454.12/15,850.73
  6. Step 6: Final answer
    x = 11,980.23

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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.