Home / 13,153.40-19,731.13-4,388.31

Finding the Fourth Proportional to 13,153.40, 19,731.13 and 4,388.31

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Solution

The fourth proportional to 13,153.40, 19,731.13 and 4,388.31 is: 6,582.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.40 : 19,731.13 = 4,388.31 : x
  2. Step 2: Convert to fraction form
    13,153.40/19,731.13 = 4,388.31/x
  3. Step 3: Cross multiply
    13,153.40x = 19,731.13 × 4,388.31
  4. Step 4: Simplify right side
    13,153.40x = 86,586,304.12
  5. Step 5: Solve for x
    x = 86,586,304.12/13,153.40
  6. Step 6: Final answer
    x = 6,582.81

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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.