Home / 20,900.62-31,276.08-18,099.16

Finding the Fourth Proportional to 20,900.62, 31,276.08 and 18,099.16

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Solution

The fourth proportional to 20,900.62, 31,276.08 and 18,099.16 is: 27,083.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900.62 : 31,276.08 = 18,099.16 : x
  2. Step 2: Convert to fraction form
    20,900.62/31,276.08 = 18,099.16/x
  3. Step 3: Cross multiply
    20,900.62x = 31,276.08 × 18,099.16
  4. Step 4: Simplify right side
    20,900.62x = 566,070,776.09
  5. Step 5: Solve for x
    x = 566,070,776.09/20,900.62
  6. Step 6: Final answer
    x = 27,083.92

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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.