Home / 11,162.25-15,403.32-6,688.47

Finding the Fourth Proportional to 11,162.25, 15,403.32 and 6,688.47

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Solution

The fourth proportional to 11,162.25, 15,403.32 and 6,688.47 is: 9,229.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,162.25 : 15,403.32 = 6,688.47 : x
  2. Step 2: Convert to fraction form
    11,162.25/15,403.32 = 6,688.47/x
  3. Step 3: Cross multiply
    11,162.25x = 15,403.32 × 6,688.47
  4. Step 4: Simplify right side
    11,162.25x = 103,024,643.72
  5. Step 5: Solve for x
    x = 103,024,643.72/11,162.25
  6. Step 6: Final answer
    x = 9,229.74

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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.