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Finding the Fourth Proportional to 15,992.87, 22,071.78 and 9,280.00

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Solution

The fourth proportional to 15,992.87, 22,071.78 and 9,280.00 is: 12,807.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,992.87 : 22,071.78 = 9,280.00 : x
  2. Step 2: Convert to fraction form
    15,992.87/22,071.78 = 9,280.00/x
  3. Step 3: Cross multiply
    15,992.87x = 22,071.78 × 9,280.00
  4. Step 4: Simplify right side
    15,992.87x = 204,825,961.64
  5. Step 5: Solve for x
    x = 204,825,961.64/15,992.87
  6. Step 6: Final answer
    x = 12,807.33

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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.