Home / 11,420.20-17,159.10-7,262.20

Finding the Fourth Proportional to 11,420.20, 17,159.10 and 7,262.20

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Solution

The fourth proportional to 11,420.20, 17,159.10 and 7,262.20 is: 10,911.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.20 : 17,159.10 = 7,262.20 : x
  2. Step 2: Convert to fraction form
    11,420.20/17,159.10 = 7,262.20/x
  3. Step 3: Cross multiply
    11,420.20x = 17,159.10 × 7,262.20
  4. Step 4: Simplify right side
    11,420.20x = 124,612,816.02
  5. Step 5: Solve for x
    x = 124,612,816.02/11,420.20
  6. Step 6: Final answer
    x = 10,911.61

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1.5x scale

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.