Home / 13,881.04-20,823.28-5,116

Finding the Fourth Proportional to 13,881.04, 20,823.28 and 5,116

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Solution

The fourth proportional to 13,881.04, 20,823.28 and 5,116 is: 7,674.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.04 : 20,823.28 = 5,116 : x
  2. Step 2: Convert to fraction form
    13,881.04/20,823.28 = 5,116/x
  3. Step 3: Cross multiply
    13,881.04x = 20,823.28 × 5,116
  4. Step 4: Simplify right side
    13,881.04x = 106,531,900.48
  5. Step 5: Solve for x
    x = 106,531,900.48/13,881.04
  6. Step 6: Final answer
    x = 7,674.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.