Home / 13,224.31-18,247.62-7,918

Finding the Fourth Proportional to 13,224.31, 18,247.62 and 7,918

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Solution

The fourth proportional to 13,224.31, 18,247.62 and 7,918 is: 10,925.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,224.31 : 18,247.62 = 7,918 : x
  2. Step 2: Convert to fraction form
    13,224.31/18,247.62 = 7,918/x
  3. Step 3: Cross multiply
    13,224.31x = 18,247.62 × 7,918
  4. Step 4: Simplify right side
    13,224.31x = 144,484,655.16
  5. Step 5: Solve for x
    x = 144,484,655.16/13,224.31
  6. Step 6: Final answer
    x = 10,925.69

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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.