Home / 11,163.95-15,406.32-6,128.39

Finding the Fourth Proportional to 11,163.95, 15,406.32 and 6,128.39

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Solution

The fourth proportional to 11,163.95, 15,406.32 and 6,128.39 is: 8,457.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,163.95 : 15,406.32 = 6,128.39 : x
  2. Step 2: Convert to fraction form
    11,163.95/15,406.32 = 6,128.39/x
  3. Step 3: Cross multiply
    11,163.95x = 15,406.32 × 6,128.39
  4. Step 4: Simplify right side
    11,163.95x = 94,415,937.42
  5. Step 5: Solve for x
    x = 94,415,937.42/11,163.95
  6. Step 6: Final answer
    x = 8,457.22

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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.