Home / 11,395.62-15,725.88-6,615.18

Finding the Fourth Proportional to 11,395.62, 15,725.88 and 6,615.18

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Solution

The fourth proportional to 11,395.62, 15,725.88 and 6,615.18 is: 9,128.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,395.62 : 15,725.88 = 6,615.18 : x
  2. Step 2: Convert to fraction form
    11,395.62/15,725.88 = 6,615.18/x
  3. Step 3: Cross multiply
    11,395.62x = 15,725.88 × 6,615.18
  4. Step 4: Simplify right side
    11,395.62x = 104,029,526.86
  5. Step 5: Solve for x
    x = 104,029,526.86/11,395.62
  6. Step 6: Final answer
    x = 9,128.90

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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.