Home / 15,408.86-21,264.20-8,694.45

Finding the Fourth Proportional to 15,408.86, 21,264.20 and 8,694.45

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Solution

The fourth proportional to 15,408.86, 21,264.20 and 8,694.45 is: 11,998.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,408.86 : 21,264.20 = 8,694.45 : x
  2. Step 2: Convert to fraction form
    15,408.86/21,264.20 = 8,694.45/x
  3. Step 3: Cross multiply
    15,408.86x = 21,264.20 × 8,694.45
  4. Step 4: Simplify right side
    15,408.86x = 184,880,480.22
  5. Step 5: Solve for x
    x = 184,880,480.22/15,408.86
  6. Step 6: Final answer
    x = 11,998.33

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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.