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Finding the Fourth Proportional to 19,856.76, 29,739.78 and 9,475.80

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Solution

The fourth proportional to 19,856.76, 29,739.78 and 9,475.80 is: 14,192.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,856.76 : 29,739.78 = 9,475.80 : x
  2. Step 2: Convert to fraction form
    19,856.76/29,739.78 = 9,475.80/x
  3. Step 3: Cross multiply
    19,856.76x = 29,739.78 × 9,475.80
  4. Step 4: Simplify right side
    19,856.76x = 281,808,207.32
  5. Step 5: Solve for x
    x = 281,808,207.32/19,856.76
  6. Step 6: Final answer
    x = 14,192.05

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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.