Home / 10,120.56-15,179.88-6,854.64

Finding the Fourth Proportional to 10,120.56, 15,179.88 and 6,854.64

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Solution

The fourth proportional to 10,120.56, 15,179.88 and 6,854.64 is: 10,281.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.56 : 15,179.88 = 6,854.64 : x
  2. Step 2: Convert to fraction form
    10,120.56/15,179.88 = 6,854.64/x
  3. Step 3: Cross multiply
    10,120.56x = 15,179.88 × 6,854.64
  4. Step 4: Simplify right side
    10,120.56x = 104,052,612.64
  5. Step 5: Solve for x
    x = 104,052,612.64/10,120.56
  6. Step 6: Final answer
    x = 10,281.31

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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.