Home / 21,245.55-31,873.31-20,892.93

Finding the Fourth Proportional to 21,245.55, 31,873.31 and 20,892.93

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Solution

The fourth proportional to 21,245.55, 31,873.31 and 20,892.93 is: 31,344.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.55 : 31,873.31 = 20,892.93 : x
  2. Step 2: Convert to fraction form
    21,245.55/31,873.31 = 20,892.93/x
  3. Step 3: Cross multiply
    21,245.55x = 31,873.31 × 20,892.93
  4. Step 4: Simplify right side
    21,245.55x = 665,926,834.70
  5. Step 5: Solve for x
    x = 665,926,834.70/21,245.55
  6. Step 6: Final answer
    x = 31,344.30

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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.