Home / 11,120.74-15,341.32-6,870.28

Finding the Fourth Proportional to 11,120.74, 15,341.32 and 6,870.28

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Solution

The fourth proportional to 11,120.74, 15,341.32 and 6,870.28 is: 9,477.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.74 : 15,341.32 = 6,870.28 : x
  2. Step 2: Convert to fraction form
    11,120.74/15,341.32 = 6,870.28/x
  3. Step 3: Cross multiply
    11,120.74x = 15,341.32 × 6,870.28
  4. Step 4: Simplify right side
    11,120.74x = 105,399,163.97
  5. Step 5: Solve for x
    x = 105,399,163.97/11,120.74
  6. Step 6: Final answer
    x = 9,477.71

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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.