Home / 10,505.20-15,738.60-8,546.80

Finding the Fourth Proportional to 10,505.20, 15,738.60 and 8,546.80

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Solution

The fourth proportional to 10,505.20, 15,738.60 and 8,546.80 is: 12,804.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,505.20 : 15,738.60 = 8,546.80 : x
  2. Step 2: Convert to fraction form
    10,505.20/15,738.60 = 8,546.80/x
  3. Step 3: Cross multiply
    10,505.20x = 15,738.60 × 8,546.80
  4. Step 4: Simplify right side
    10,505.20x = 134,514,666.48
  5. Step 5: Solve for x
    x = 134,514,666.48/10,505.20
  6. Step 6: Final answer
    x = 12,804.58

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1.5x scale

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.