Home / 11,477.60-17,218.80-3,687.20

Finding the Fourth Proportional to 11,477.60, 17,218.80 and 3,687.20

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Solution

The fourth proportional to 11,477.60, 17,218.80 and 3,687.20 is: 5,531.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,477.60 : 17,218.80 = 3,687.20 : x
  2. Step 2: Convert to fraction form
    11,477.60/17,218.80 = 3,687.20/x
  3. Step 3: Cross multiply
    11,477.60x = 17,218.80 × 3,687.20
  4. Step 4: Simplify right side
    11,477.60x = 63,489,159.36
  5. Step 5: Solve for x
    x = 63,489,159.36/11,477.60
  6. Step 6: Final answer
    x = 5,531.57

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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.