Home / 11,021.33-15,210.83-6,830.21

Finding the Fourth Proportional to 11,021.33, 15,210.83 and 6,830.21

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Solution

The fourth proportional to 11,021.33, 15,210.83 and 6,830.21 is: 9,426.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,021.33 : 15,210.83 = 6,830.21 : x
  2. Step 2: Convert to fraction form
    11,021.33/15,210.83 = 6,830.21/x
  3. Step 3: Cross multiply
    11,021.33x = 15,210.83 × 6,830.21
  4. Step 4: Simplify right side
    11,021.33x = 103,893,129.02
  5. Step 5: Solve for x
    x = 103,893,129.02/11,021.33
  6. Step 6: Final answer
    x = 9,426.55

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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.