Home / 10,080.32-15,120.96-4,890.56

Finding the Fourth Proportional to 10,080.32, 15,120.96 and 4,890.56

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Solution

The fourth proportional to 10,080.32, 15,120.96 and 4,890.56 is: 7,336.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,080.32 : 15,120.96 = 4,890.56 : x
  2. Step 2: Convert to fraction form
    10,080.32/15,120.96 = 4,890.56/x
  3. Step 3: Cross multiply
    10,080.32x = 15,120.96 × 4,890.56
  4. Step 4: Simplify right side
    10,080.32x = 73,949,962.14
  5. Step 5: Solve for x
    x = 73,949,962.14/10,080.32
  6. Step 6: Final answer
    x = 7,336.07

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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.