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Finding the Fourth Proportional to 19,693.65, 29,540.70 and 4,902.60

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Solution

The fourth proportional to 19,693.65, 29,540.70 and 4,902.60 is: 7,353.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,693.65 : 29,540.70 = 4,902.60 : x
  2. Step 2: Convert to fraction form
    19,693.65/29,540.70 = 4,902.60/x
  3. Step 3: Cross multiply
    19,693.65x = 29,540.70 × 4,902.60
  4. Step 4: Simplify right side
    19,693.65x = 144,826,235.82
  5. Step 5: Solve for x
    x = 144,826,235.82/19,693.65
  6. Step 6: Final answer
    x = 7,353.96

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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.