Home / 11,128.86-15,361.14-6,416.46

Finding the Fourth Proportional to 11,128.86, 15,361.14 and 6,416.46

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Solution

The fourth proportional to 11,128.86, 15,361.14 and 6,416.46 is: 8,856.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.86 : 15,361.14 = 6,416.46 : x
  2. Step 2: Convert to fraction form
    11,128.86/15,361.14 = 6,416.46/x
  3. Step 3: Cross multiply
    11,128.86x = 15,361.14 × 6,416.46
  4. Step 4: Simplify right side
    11,128.86x = 98,564,140.36
  5. Step 5: Solve for x
    x = 98,564,140.36/11,128.86
  6. Step 6: Final answer
    x = 8,856.63

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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.