Home / 20,360.86-28,099.71-11,408.23

Finding the Fourth Proportional to 20,360.86, 28,099.71 and 11,408.23

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Solution

The fourth proportional to 20,360.86, 28,099.71 and 11,408.23 is: 15,744.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.86 : 28,099.71 = 11,408.23 : x
  2. Step 2: Convert to fraction form
    20,360.86/28,099.71 = 11,408.23/x
  3. Step 3: Cross multiply
    20,360.86x = 28,099.71 × 11,408.23
  4. Step 4: Simplify right side
    20,360.86x = 320,567,954.61
  5. Step 5: Solve for x
    x = 320,567,954.61/20,360.86
  6. Step 6: Final answer
    x = 15,744.32

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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.