Home / 15,621.78-23,395.11-8,938.02

Finding the Fourth Proportional to 15,621.78, 23,395.11 and 8,938.02

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Solution

The fourth proportional to 15,621.78, 23,395.11 and 8,938.02 is: 13,385.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.78 : 23,395.11 = 8,938.02 : x
  2. Step 2: Convert to fraction form
    15,621.78/23,395.11 = 8,938.02/x
  3. Step 3: Cross multiply
    15,621.78x = 23,395.11 × 8,938.02
  4. Step 4: Simplify right side
    15,621.78x = 209,105,961.08
  5. Step 5: Solve for x
    x = 209,105,961.08/15,621.78
  6. Step 6: Final answer
    x = 13,385.54

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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.