Home / 12,372.07-17,079.34-8,290.91

Finding the Fourth Proportional to 12,372.07, 17,079.34 and 8,290.91

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Solution

The fourth proportional to 12,372.07, 17,079.34 and 8,290.91 is: 11,445.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,372.07 : 17,079.34 = 8,290.91 : x
  2. Step 2: Convert to fraction form
    12,372.07/17,079.34 = 8,290.91/x
  3. Step 3: Cross multiply
    12,372.07x = 17,079.34 × 8,290.91
  4. Step 4: Simplify right side
    12,372.07x = 141,603,164.68
  5. Step 5: Solve for x
    x = 141,603,164.68/12,372.07
  6. Step 6: Final answer
    x = 11,445.39

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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.