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Finding the Fourth Proportional to 20,552.90, 28,708.45 and 20,552.90

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Solution

The fourth proportional to 20,552.90, 28,708.45 and 20,552.90 is: 28,708.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.90 : 28,708.45 = 20,552.90 : x
  2. Step 2: Convert to fraction form
    20,552.90/28,708.45 = 20,552.90/x
  3. Step 3: Cross multiply
    20,552.90x = 28,708.45 × 20,552.90
  4. Step 4: Simplify right side
    20,552.90x = 590,041,902.01
  5. Step 5: Solve for x
    x = 590,041,902.01/20,552.90
  6. Step 6: Final answer
    x = 28,708.45

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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.