Home / 19,869.60-29,812.05-8,768.45

Finding the Fourth Proportional to 19,869.60, 29,812.05 and 8,768.45

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Solution

The fourth proportional to 19,869.60, 29,812.05 and 8,768.45 is: 13,156.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.60 : 29,812.05 = 8,768.45 : x
  2. Step 2: Convert to fraction form
    19,869.60/29,812.05 = 8,768.45/x
  3. Step 3: Cross multiply
    19,869.60x = 29,812.05 × 8,768.45
  4. Step 4: Simplify right side
    19,869.60x = 261,405,544.35
  5. Step 5: Solve for x
    x = 261,405,544.35/19,869.60
  6. Step 6: Final answer
    x = 13,156.05

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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.