Home / 13,507.20-20,260.80-8,841.60

Finding the Fourth Proportional to 13,507.20, 20,260.80 and 8,841.60

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Solution

The fourth proportional to 13,507.20, 20,260.80 and 8,841.60 is: 13,262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,507.20 : 20,260.80 = 8,841.60 : x
  2. Step 2: Convert to fraction form
    13,507.20/20,260.80 = 8,841.60/x
  3. Step 3: Cross multiply
    13,507.20x = 20,260.80 × 8,841.60
  4. Step 4: Simplify right side
    13,507.20x = 179,137,889.28
  5. Step 5: Solve for x
    x = 179,137,889.28/13,507.20
  6. Step 6: Final answer
    x = 13,262.40

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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.