Home / 20,459.87-28,112.25-16,260.83

Finding the Fourth Proportional to 20,459.87, 28,112.25 and 16,260.83

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Solution

The fourth proportional to 20,459.87, 28,112.25 and 16,260.83 is: 22,342.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,459.87 : 28,112.25 = 16,260.83 : x
  2. Step 2: Convert to fraction form
    20,459.87/28,112.25 = 16,260.83/x
  3. Step 3: Cross multiply
    20,459.87x = 28,112.25 × 16,260.83
  4. Step 4: Simplify right side
    20,459.87x = 457,128,518.17
  5. Step 5: Solve for x
    x = 457,128,518.17/20,459.87
  6. Step 6: Final answer
    x = 22,342.69

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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.