Home / 20,440.56-28,210.31-11,366.83

Finding the Fourth Proportional to 20,440.56, 28,210.31 and 11,366.83

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Solution

The fourth proportional to 20,440.56, 28,210.31 and 11,366.83 is: 15,687.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.56 : 28,210.31 = 11,366.83 : x
  2. Step 2: Convert to fraction form
    20,440.56/28,210.31 = 11,366.83/x
  3. Step 3: Cross multiply
    20,440.56x = 28,210.31 × 11,366.83
  4. Step 4: Simplify right side
    20,440.56x = 320,661,798.02
  5. Step 5: Solve for x
    x = 320,661,798.02/20,440.56
  6. Step 6: Final answer
    x = 15,687.53

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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.