Home / 13,710.79-18,921.28-7,743.36

Finding the Fourth Proportional to 13,710.79, 18,921.28 and 7,743.36

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Solution

The fourth proportional to 13,710.79, 18,921.28 and 7,743.36 is: 10,686.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,710.79 : 18,921.28 = 7,743.36 : x
  2. Step 2: Convert to fraction form
    13,710.79/18,921.28 = 7,743.36/x
  3. Step 3: Cross multiply
    13,710.79x = 18,921.28 × 7,743.36
  4. Step 4: Simplify right side
    13,710.79x = 146,514,282.70
  5. Step 5: Solve for x
    x = 146,514,282.70/13,710.79
  6. Step 6: Final answer
    x = 10,686.06

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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.