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Finding the Fourth Proportional to 10,307.81, 14,224.79 and 5,831.47

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Solution

The fourth proportional to 10,307.81, 14,224.79 and 5,831.47 is: 8,047.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,307.81 : 14,224.79 = 5,831.47 : x
  2. Step 2: Convert to fraction form
    10,307.81/14,224.79 = 5,831.47/x
  3. Step 3: Cross multiply
    10,307.81x = 14,224.79 × 5,831.47
  4. Step 4: Simplify right side
    10,307.81x = 82,951,371.42
  5. Step 5: Solve for x
    x = 82,951,371.42/10,307.81
  6. Step 6: Final answer
    x = 8,047.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.