Home / 27,821.21-38,445.66-21,094.35

Finding the Fourth Proportional to 27,821.21, 38,445.66 and 21,094.35

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Solution

The fourth proportional to 27,821.21, 38,445.66 and 21,094.35 is: 29,149.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,821.21 : 38,445.66 = 21,094.35 : x
  2. Step 2: Convert to fraction form
    27,821.21/38,445.66 = 21,094.35/x
  3. Step 3: Cross multiply
    27,821.21x = 38,445.66 × 21,094.35
  4. Step 4: Simplify right side
    27,821.21x = 810,986,208.02
  5. Step 5: Solve for x
    x = 810,986,208.02/27,821.21
  6. Step 6: Final answer
    x = 29,149.93

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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.