Home / 13,255.52-18,285.01-8,278.88

Finding the Fourth Proportional to 13,255.52, 18,285.01 and 8,278.88

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Solution

The fourth proportional to 13,255.52, 18,285.01 and 8,278.88 is: 11,420.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.52 : 18,285.01 = 8,278.88 : x
  2. Step 2: Convert to fraction form
    13,255.52/18,285.01 = 8,278.88/x
  3. Step 3: Cross multiply
    13,255.52x = 18,285.01 × 8,278.88
  4. Step 4: Simplify right side
    13,255.52x = 151,379,291.47
  5. Step 5: Solve for x
    x = 151,379,291.47/13,255.52
  6. Step 6: Final answer
    x = 11,420.10

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1.5x scale

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.