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Finding the Fourth Proportional to 15,009.73, 20,713.99 and 8,295.64

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Solution

The fourth proportional to 15,009.73, 20,713.99 and 8,295.64 is: 11,448.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,009.73 : 20,713.99 = 8,295.64 : x
  2. Step 2: Convert to fraction form
    15,009.73/20,713.99 = 8,295.64/x
  3. Step 3: Cross multiply
    15,009.73x = 20,713.99 × 8,295.64
  4. Step 4: Simplify right side
    15,009.73x = 171,835,804.00
  5. Step 5: Solve for x
    x = 171,835,804.00/15,009.73
  6. Step 6: Final answer
    x = 11,448.29

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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.