Home / 11,420.19-17,129.07-3,628.40

Finding the Fourth Proportional to 11,420.19, 17,129.07 and 3,628.40

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Solution

The fourth proportional to 11,420.19, 17,129.07 and 3,628.40 is: 5,442.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.19 : 17,129.07 = 3,628.40 : x
  2. Step 2: Convert to fraction form
    11,420.19/17,129.07 = 3,628.40/x
  3. Step 3: Cross multiply
    11,420.19x = 17,129.07 × 3,628.40
  4. Step 4: Simplify right side
    11,420.19x = 62,151,031.94
  5. Step 5: Solve for x
    x = 62,151,031.94/11,420.19
  6. Step 6: Final answer
    x = 5,442.21

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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.