Home / 20,416.50-28,087.29-19,541.70

Finding the Fourth Proportional to 20,416.50, 28,087.29 and 19,541.70

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Solution

The fourth proportional to 20,416.50, 28,087.29 and 19,541.70 is: 26,883.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.50 : 28,087.29 = 19,541.70 : x
  2. Step 2: Convert to fraction form
    20,416.50/28,087.29 = 19,541.70/x
  3. Step 3: Cross multiply
    20,416.50x = 28,087.29 × 19,541.70
  4. Step 4: Simplify right side
    20,416.50x = 548,873,394.99
  5. Step 5: Solve for x
    x = 548,873,394.99/20,416.50
  6. Step 6: Final answer
    x = 26,883.81

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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.