Home / 11,107.62-15,328.71-6,915.87

Finding the Fourth Proportional to 11,107.62, 15,328.71 and 6,915.87

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Solution

The fourth proportional to 11,107.62, 15,328.71 and 6,915.87 is: 9,544.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,107.62 : 15,328.71 = 6,915.87 : x
  2. Step 2: Convert to fraction form
    11,107.62/15,328.71 = 6,915.87/x
  3. Step 3: Cross multiply
    11,107.62x = 15,328.71 × 6,915.87
  4. Step 4: Simplify right side
    11,107.62x = 106,011,365.63
  5. Step 5: Solve for x
    x = 106,011,365.63/11,107.62
  6. Step 6: Final answer
    x = 9,544.02

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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.