Home / 11,083.20-16,621.20-3,686.40

Finding the Fourth Proportional to 11,083.20, 16,621.20 and 3,686.40

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Solution

The fourth proportional to 11,083.20, 16,621.20 and 3,686.40 is: 5,528.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,083.20 : 16,621.20 = 3,686.40 : x
  2. Step 2: Convert to fraction form
    11,083.20/16,621.20 = 3,686.40/x
  3. Step 3: Cross multiply
    11,083.20x = 16,621.20 × 3,686.40
  4. Step 4: Simplify right side
    11,083.20x = 61,272,391.68
  5. Step 5: Solve for x
    x = 61,272,391.68/11,083.20
  6. Step 6: Final answer
    x = 5,528.40

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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.