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Finding the Fourth Proportional to 20,214.45, 28,358.55 and 20,214.45

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Solution

The fourth proportional to 20,214.45, 28,358.55 and 20,214.45 is: 28,358.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,214.45 : 28,358.55 = 20,214.45 : x
  2. Step 2: Convert to fraction form
    20,214.45/28,358.55 = 20,214.45/x
  3. Step 3: Cross multiply
    20,214.45x = 28,358.55 × 20,214.45
  4. Step 4: Simplify right side
    20,214.45x = 573,252,491.05
  5. Step 5: Solve for x
    x = 573,252,491.05/20,214.45
  6. Step 6: Final answer
    x = 28,358.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.