Home / 13,719.81-18,932.22-7,752

Finding the Fourth Proportional to 13,719.81, 18,932.22 and 7,752

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Solution

The fourth proportional to 13,719.81, 18,932.22 and 7,752 is: 10,697.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.81 : 18,932.22 = 7,752 : x
  2. Step 2: Convert to fraction form
    13,719.81/18,932.22 = 7,752/x
  3. Step 3: Cross multiply
    13,719.81x = 18,932.22 × 7,752
  4. Step 4: Simplify right side
    13,719.81x = 146,762,569.44
  5. Step 5: Solve for x
    x = 146,762,569.44/13,719.81
  6. Step 6: Final answer
    x = 10,697.13

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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.