Home / 10,394.28-15,553.20-9,831.36

Finding the Fourth Proportional to 10,394.28, 15,553.20 and 9,831.36

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Solution

The fourth proportional to 10,394.28, 15,553.20 and 9,831.36 is: 14,710.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,394.28 : 15,553.20 = 9,831.36 : x
  2. Step 2: Convert to fraction form
    10,394.28/15,553.20 = 9,831.36/x
  3. Step 3: Cross multiply
    10,394.28x = 15,553.20 × 9,831.36
  4. Step 4: Simplify right side
    10,394.28x = 152,909,108.35
  5. Step 5: Solve for x
    x = 152,909,108.35/10,394.28
  6. Step 6: Final answer
    x = 14,710.89

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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.