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Finding the Fourth Proportional to 20,458.87, 28,110.88 and 16,259.83

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Solution

The fourth proportional to 20,458.87, 28,110.88 and 16,259.83 is: 22,341.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.87 : 28,110.88 = 16,259.83 : x
  2. Step 2: Convert to fraction form
    20,458.87/28,110.88 = 16,259.83/x
  3. Step 3: Cross multiply
    20,458.87x = 28,110.88 × 16,259.83
  4. Step 4: Simplify right side
    20,458.87x = 457,077,989.40
  5. Step 5: Solve for x
    x = 457,077,989.40/20,458.87
  6. Step 6: Final answer
    x = 22,341.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.