Home / 15,821.21-21,837.60-9,849.33

Finding the Fourth Proportional to 15,821.21, 21,837.60 and 9,849.33

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Solution

The fourth proportional to 15,821.21, 21,837.60 and 9,849.33 is: 13,594.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.21 : 21,837.60 = 9,849.33 : x
  2. Step 2: Convert to fraction form
    15,821.21/21,837.60 = 9,849.33/x
  3. Step 3: Cross multiply
    15,821.21x = 21,837.60 × 9,849.33
  4. Step 4: Simplify right side
    15,821.21x = 215,085,728.81
  5. Step 5: Solve for x
    x = 215,085,728.81/15,821.21
  6. Step 6: Final answer
    x = 13,594.78

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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.