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Finding the Fourth Proportional to 21,358.54, 32,016.36 and 7,308.94

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Solution

The fourth proportional to 21,358.54, 32,016.36 and 7,308.94 is: 10,956.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,358.54 : 32,016.36 = 7,308.94 : x
  2. Step 2: Convert to fraction form
    21,358.54/32,016.36 = 7,308.94/x
  3. Step 3: Cross multiply
    21,358.54x = 32,016.36 × 7,308.94
  4. Step 4: Simplify right side
    21,358.54x = 234,005,654.26
  5. Step 5: Solve for x
    x = 234,005,654.26/21,358.54
  6. Step 6: Final answer
    x = 10,956.07

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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.