Home / 20,260.80-30,360.96-12,476.16

Finding the Fourth Proportional to 20,260.80, 30,360.96 and 12,476.16

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Solution

The fourth proportional to 20,260.80, 30,360.96 and 12,476.16 is: 18,695.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.80 : 30,360.96 = 12,476.16 : x
  2. Step 2: Convert to fraction form
    20,260.80/30,360.96 = 12,476.16/x
  3. Step 3: Cross multiply
    20,260.80x = 30,360.96 × 12,476.16
  4. Step 4: Simplify right side
    20,260.80x = 378,788,194.71
  5. Step 5: Solve for x
    x = 378,788,194.71/20,260.80
  6. Step 6: Final answer
    x = 18,695.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.