Home / 15,324.96-21,148.11-8,518.53

Finding the Fourth Proportional to 15,324.96, 21,148.11 and 8,518.53

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Solution

The fourth proportional to 15,324.96, 21,148.11 and 8,518.53 is: 11,755.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,324.96 : 21,148.11 = 8,518.53 : x
  2. Step 2: Convert to fraction form
    15,324.96/21,148.11 = 8,518.53/x
  3. Step 3: Cross multiply
    15,324.96x = 21,148.11 × 8,518.53
  4. Step 4: Simplify right side
    15,324.96x = 180,150,809.48
  5. Step 5: Solve for x
    x = 180,150,809.48/15,324.96
  6. Step 6: Final answer
    x = 11,755.39

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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.