Home / 11,391.20-17,086.80-3,602.40

Finding the Fourth Proportional to 11,391.20, 17,086.80 and 3,602.40

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Solution

The fourth proportional to 11,391.20, 17,086.80 and 3,602.40 is: 5,403.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.20 : 17,086.80 = 3,602.40 : x
  2. Step 2: Convert to fraction form
    11,391.20/17,086.80 = 3,602.40/x
  3. Step 3: Cross multiply
    11,391.20x = 17,086.80 × 3,602.40
  4. Step 4: Simplify right side
    11,391.20x = 61,553,488.32
  5. Step 5: Solve for x
    x = 61,553,488.32/11,391.20
  6. Step 6: Final answer
    x = 5,403.60

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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.