Home / 20,634.70-28,411.14-18,209.56

Finding the Fourth Proportional to 20,634.70, 28,411.14 and 18,209.56

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Solution

The fourth proportional to 20,634.70, 28,411.14 and 18,209.56 is: 25,072.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.70 : 28,411.14 = 18,209.56 : x
  2. Step 2: Convert to fraction form
    20,634.70/28,411.14 = 18,209.56/x
  3. Step 3: Cross multiply
    20,634.70x = 28,411.14 × 18,209.56
  4. Step 4: Simplify right side
    20,634.70x = 517,354,358.50
  5. Step 5: Solve for x
    x = 517,354,358.50/20,634.70
  6. Step 6: Final answer
    x = 25,072.06

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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.