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Finding the Fourth Proportional to 15,243.52, 21,035.28 and 8,529.16

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Solution

The fourth proportional to 15,243.52, 21,035.28 and 8,529.16 is: 11,769.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,243.52 : 21,035.28 = 8,529.16 : x
  2. Step 2: Convert to fraction form
    15,243.52/21,035.28 = 8,529.16/x
  3. Step 3: Cross multiply
    15,243.52x = 21,035.28 × 8,529.16
  4. Step 4: Simplify right side
    15,243.52x = 179,413,268.76
  5. Step 5: Solve for x
    x = 179,413,268.76/15,243.52
  6. Step 6: Final answer
    x = 11,769.81

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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.