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Finding the Fourth Proportional to 15,009.16, 20,712.52 and 8,294.64

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Solution

The fourth proportional to 15,009.16, 20,712.52 and 8,294.64 is: 11,446.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,009.16 : 20,712.52 = 8,294.64 : x
  2. Step 2: Convert to fraction form
    15,009.16/20,712.52 = 8,294.64/x
  3. Step 3: Cross multiply
    15,009.16x = 20,712.52 × 8,294.64
  4. Step 4: Simplify right side
    15,009.16x = 171,802,896.89
  5. Step 5: Solve for x
    x = 171,802,896.89/15,009.16
  6. Step 6: Final answer
    x = 11,446.54

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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.