Home / 20,453.19-28,226.25-11,501.07

Finding the Fourth Proportional to 20,453.19, 28,226.25 and 11,501.07

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Solution

The fourth proportional to 20,453.19, 28,226.25 and 11,501.07 is: 15,871.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.19 : 28,226.25 = 11,501.07 : x
  2. Step 2: Convert to fraction form
    20,453.19/28,226.25 = 11,501.07/x
  3. Step 3: Cross multiply
    20,453.19x = 28,226.25 × 11,501.07
  4. Step 4: Simplify right side
    20,453.19x = 324,632,077.09
  5. Step 5: Solve for x
    x = 324,632,077.09/20,453.19
  6. Step 6: Final answer
    x = 15,871.95

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Half scale
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Double scale
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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.