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Finding the Fourth Proportional to 38,007.60, 57,016.80 and 11,709.60

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Solution

The fourth proportional to 38,007.60, 57,016.80 and 11,709.60 is: 17,566.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,007.60 : 57,016.80 = 11,709.60 : x
  2. Step 2: Convert to fraction form
    38,007.60/57,016.80 = 11,709.60/x
  3. Step 3: Cross multiply
    38,007.60x = 57,016.80 × 11,709.60
  4. Step 4: Simplify right side
    38,007.60x = 667,643,921.28
  5. Step 5: Solve for x
    x = 667,643,921.28/38,007.60
  6. Step 6: Final answer
    x = 17,566.06

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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.