Home / 11,207.90-15,466.16-6,427.78

Finding the Fourth Proportional to 11,207.90, 15,466.16 and 6,427.78

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Solution

The fourth proportional to 11,207.90, 15,466.16 and 6,427.78 is: 8,869.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,207.90 : 15,466.16 = 6,427.78 : x
  2. Step 2: Convert to fraction form
    11,207.90/15,466.16 = 6,427.78/x
  3. Step 3: Cross multiply
    11,207.90x = 15,466.16 × 6,427.78
  4. Step 4: Simplify right side
    11,207.90x = 99,413,073.92
  5. Step 5: Solve for x
    x = 99,413,073.92/11,207.90
  6. Step 6: Final answer
    x = 8,869.91

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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.