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Finding the Fourth Proportional to 38,353.50, 52,928.64 and 21,586.50

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Solution

The fourth proportional to 38,353.50, 52,928.64 and 21,586.50 is: 29,789.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,353.50 : 52,928.64 = 21,586.50 : x
  2. Step 2: Convert to fraction form
    38,353.50/52,928.64 = 21,586.50/x
  3. Step 3: Cross multiply
    38,353.50x = 52,928.64 × 21,586.50
  4. Step 4: Simplify right side
    38,353.50x = 1,142,544,087.36
  5. Step 5: Solve for x
    x = 1,142,544,087.36/38,353.50
  6. Step 6: Final answer
    x = 29,789.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.