Home / 20,870.08-31,305.12-6,080.15

Finding the Fourth Proportional to 20,870.08, 31,305.12 and 6,080.15

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Solution

The fourth proportional to 20,870.08, 31,305.12 and 6,080.15 is: 9,120.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,870.08 : 31,305.12 = 6,080.15 : x
  2. Step 2: Convert to fraction form
    20,870.08/31,305.12 = 6,080.15/x
  3. Step 3: Cross multiply
    20,870.08x = 31,305.12 × 6,080.15
  4. Step 4: Simplify right side
    20,870.08x = 190,339,825.37
  5. Step 5: Solve for x
    x = 190,339,825.37/20,870.08
  6. Step 6: Final answer
    x = 9,120.23

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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.