Home / 11,115.44-15,327.60-6,916.40

Finding the Fourth Proportional to 11,115.44, 15,327.60 and 6,916.40

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Solution

The fourth proportional to 11,115.44, 15,327.60 and 6,916.40 is: 9,537.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.44 : 15,327.60 = 6,916.40 : x
  2. Step 2: Convert to fraction form
    11,115.44/15,327.60 = 6,916.40/x
  3. Step 3: Cross multiply
    11,115.44x = 15,327.60 × 6,916.40
  4. Step 4: Simplify right side
    11,115.44x = 106,011,812.64
  5. Step 5: Solve for x
    x = 106,011,812.64/11,115.44
  6. Step 6: Final answer
    x = 9,537.35

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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.