Home / 20,363.16-28,099.38-11,409.48

Finding the Fourth Proportional to 20,363.16, 28,099.38 and 11,409.48

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Solution

The fourth proportional to 20,363.16, 28,099.38 and 11,409.48 is: 15,744.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.16 : 28,099.38 = 11,409.48 : x
  2. Step 2: Convert to fraction form
    20,363.16/28,099.38 = 11,409.48/x
  3. Step 3: Cross multiply
    20,363.16x = 28,099.38 × 11,409.48
  4. Step 4: Simplify right side
    20,363.16x = 320,599,314.12
  5. Step 5: Solve for x
    x = 320,599,314.12/20,363.16
  6. Step 6: Final answer
    x = 15,744.08

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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.