Home / 21,579.02-32,372.62-8,430.56

Finding the Fourth Proportional to 21,579.02, 32,372.62 and 8,430.56

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Solution

The fourth proportional to 21,579.02, 32,372.62 and 8,430.56 is: 12,647.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,579.02 : 32,372.62 = 8,430.56 : x
  2. Step 2: Convert to fraction form
    21,579.02/32,372.62 = 8,430.56/x
  3. Step 3: Cross multiply
    21,579.02x = 32,372.62 × 8,430.56
  4. Step 4: Simplify right side
    21,579.02x = 272,919,375.12
  5. Step 5: Solve for x
    x = 272,919,375.12/21,579.02
  6. Step 6: Final answer
    x = 12,647.44

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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.