Home / 21,883.02-30,195.29-12,321.52

Finding the Fourth Proportional to 21,883.02, 30,195.29 and 12,321.52

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Solution

The fourth proportional to 21,883.02, 30,195.29 and 12,321.52 is: 17,001.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,883.02 : 30,195.29 = 12,321.52 : x
  2. Step 2: Convert to fraction form
    21,883.02/30,195.29 = 12,321.52/x
  3. Step 3: Cross multiply
    21,883.02x = 30,195.29 × 12,321.52
  4. Step 4: Simplify right side
    21,883.02x = 372,051,869.64
  5. Step 5: Solve for x
    x = 372,051,869.64/21,883.02
  6. Step 6: Final answer
    x = 17,001.85

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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.