Home / 20,654.70-28,459.26-18,956.22

Finding the Fourth Proportional to 20,654.70, 28,459.26 and 18,956.22

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Solution

The fourth proportional to 20,654.70, 28,459.26 and 18,956.22 is: 26,118.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.70 : 28,459.26 = 18,956.22 : x
  2. Step 2: Convert to fraction form
    20,654.70/28,459.26 = 18,956.22/x
  3. Step 3: Cross multiply
    20,654.70x = 28,459.26 × 18,956.22
  4. Step 4: Simplify right side
    20,654.70x = 539,479,993.60
  5. Step 5: Solve for x
    x = 539,479,993.60/20,654.70
  6. Step 6: Final answer
    x = 26,118.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.