Home / 11,210.83-15,454.79-7,843.21

Finding the Fourth Proportional to 11,210.83, 15,454.79 and 7,843.21

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Solution

The fourth proportional to 11,210.83, 15,454.79 and 7,843.21 is: 10,812.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,210.83 : 15,454.79 = 7,843.21 : x
  2. Step 2: Convert to fraction form
    11,210.83/15,454.79 = 7,843.21/x
  3. Step 3: Cross multiply
    11,210.83x = 15,454.79 × 7,843.21
  4. Step 4: Simplify right side
    11,210.83x = 121,215,124.26
  5. Step 5: Solve for x
    x = 121,215,124.26/11,210.83
  6. Step 6: Final answer
    x = 10,812.32

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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.