Home / 20,431.12-28,222.68-16,010.68

Finding the Fourth Proportional to 20,431.12, 28,222.68 and 16,010.68

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Solution

The fourth proportional to 20,431.12, 28,222.68 and 16,010.68 is: 22,116.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.12 : 28,222.68 = 16,010.68 : x
  2. Step 2: Convert to fraction form
    20,431.12/28,222.68 = 16,010.68/x
  3. Step 3: Cross multiply
    20,431.12x = 28,222.68 × 16,010.68
  4. Step 4: Simplify right side
    20,431.12x = 451,864,298.22
  5. Step 5: Solve for x
    x = 451,864,298.22/20,431.12
  6. Step 6: Final answer
    x = 22,116.47

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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.