Home / 10,886.35-15,021.81-6,635.87

Finding the Fourth Proportional to 10,886.35, 15,021.81 and 6,635.87

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Solution

The fourth proportional to 10,886.35, 15,021.81 and 6,635.87 is: 9,156.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,886.35 : 15,021.81 = 6,635.87 : x
  2. Step 2: Convert to fraction form
    10,886.35/15,021.81 = 6,635.87/x
  3. Step 3: Cross multiply
    10,886.35x = 15,021.81 × 6,635.87
  4. Step 4: Simplify right side
    10,886.35x = 99,682,778.32
  5. Step 5: Solve for x
    x = 99,682,778.32/10,886.35
  6. Step 6: Final answer
    x = 9,156.68

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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.