Home / 15,869.53-21,899.61-8,795.89

Finding the Fourth Proportional to 15,869.53, 21,899.61 and 8,795.89

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Solution

The fourth proportional to 15,869.53, 21,899.61 and 8,795.89 is: 12,138.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.53 : 21,899.61 = 8,795.89 : x
  2. Step 2: Convert to fraction form
    15,869.53/21,899.61 = 8,795.89/x
  3. Step 3: Cross multiply
    15,869.53x = 21,899.61 × 8,795.89
  4. Step 4: Simplify right side
    15,869.53x = 192,626,560.60
  5. Step 5: Solve for x
    x = 192,626,560.60/15,869.53
  6. Step 6: Final answer
    x = 12,138.14

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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.