Home / 10,087.92-13,920.48-5,611.32

Finding the Fourth Proportional to 10,087.92, 13,920.48 and 5,611.32

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Solution

The fourth proportional to 10,087.92, 13,920.48 and 5,611.32 is: 7,743.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,087.92 : 13,920.48 = 5,611.32 : x
  2. Step 2: Convert to fraction form
    10,087.92/13,920.48 = 5,611.32/x
  3. Step 3: Cross multiply
    10,087.92x = 13,920.48 × 5,611.32
  4. Step 4: Simplify right side
    10,087.92x = 78,112,267.83
  5. Step 5: Solve for x
    x = 78,112,267.83/10,087.92
  6. Step 6: Final answer
    x = 7,743.15

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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.