Home / 15,492.09-21,379.05-8,418.54

Finding the Fourth Proportional to 15,492.09, 21,379.05 and 8,418.54

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Solution

The fourth proportional to 15,492.09, 21,379.05 and 8,418.54 is: 11,617.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,492.09 : 21,379.05 = 8,418.54 : x
  2. Step 2: Convert to fraction form
    15,492.09/21,379.05 = 8,418.54/x
  3. Step 3: Cross multiply
    15,492.09x = 21,379.05 × 8,418.54
  4. Step 4: Simplify right side
    15,492.09x = 179,980,387.59
  5. Step 5: Solve for x
    x = 179,980,387.59/15,492.09
  6. Step 6: Final answer
    x = 11,617.57

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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.