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Finding the Fourth Proportional to 26,687.52, 36,831.12 and 15,513.12

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Solution

The fourth proportional to 26,687.52, 36,831.12 and 15,513.12 is: 21,409.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,687.52 : 36,831.12 = 15,513.12 : x
  2. Step 2: Convert to fraction form
    26,687.52/36,831.12 = 15,513.12/x
  3. Step 3: Cross multiply
    26,687.52x = 36,831.12 × 15,513.12
  4. Step 4: Simplify right side
    26,687.52x = 571,365,584.29
  5. Step 5: Solve for x
    x = 571,365,584.29/26,687.52
  6. Step 6: Final answer
    x = 21,409.47

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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.