Home / 15,514.22-21,408.89-8,440.49

Finding the Fourth Proportional to 15,514.22, 21,408.89 and 8,440.49

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Solution

The fourth proportional to 15,514.22, 21,408.89 and 8,440.49 is: 11,647.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,514.22 : 21,408.89 = 8,440.49 : x
  2. Step 2: Convert to fraction form
    15,514.22/21,408.89 = 8,440.49/x
  3. Step 3: Cross multiply
    15,514.22x = 21,408.89 × 8,440.49
  4. Step 4: Simplify right side
    15,514.22x = 180,701,372.71
  5. Step 5: Solve for x
    x = 180,701,372.71/15,514.22
  6. Step 6: Final answer
    x = 11,647.47

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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.