Home / 10,080.10-15,120.15-6,370.30

Finding the Fourth Proportional to 10,080.10, 15,120.15 and 6,370.30

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Solution

The fourth proportional to 10,080.10, 15,120.15 and 6,370.30 is: 9,555.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,080.10 : 15,120.15 = 6,370.30 : x
  2. Step 2: Convert to fraction form
    10,080.10/15,120.15 = 6,370.30/x
  3. Step 3: Cross multiply
    10,080.10x = 15,120.15 × 6,370.30
  4. Step 4: Simplify right side
    10,080.10x = 96,319,891.55
  5. Step 5: Solve for x
    x = 96,319,891.55/10,080.10
  6. Step 6: Final answer
    x = 9,555.45

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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.