Home / 20,443.08-28,210.44-11,490.96

Finding the Fourth Proportional to 20,443.08, 28,210.44 and 11,490.96

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Solution

The fourth proportional to 20,443.08, 28,210.44 and 11,490.96 is: 15,856.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.08 : 28,210.44 = 11,490.96 : x
  2. Step 2: Convert to fraction form
    20,443.08/28,210.44 = 11,490.96/x
  3. Step 3: Cross multiply
    20,443.08x = 28,210.44 × 11,490.96
  4. Step 4: Simplify right side
    20,443.08x = 324,165,037.62
  5. Step 5: Solve for x
    x = 324,165,037.62/20,443.08
  6. Step 6: Final answer
    x = 15,856.96

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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.