Home / 21,933.22-30,266.00-12,979.16

Finding the Fourth Proportional to 21,933.22, 30,266.00 and 12,979.16

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Solution

The fourth proportional to 21,933.22, 30,266.00 and 12,979.16 is: 17,910.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,933.22 : 30,266.00 = 12,979.16 : x
  2. Step 2: Convert to fraction form
    21,933.22/30,266.00 = 12,979.16/x
  3. Step 3: Cross multiply
    21,933.22x = 30,266.00 × 12,979.16
  4. Step 4: Simplify right side
    21,933.22x = 392,827,191.66
  5. Step 5: Solve for x
    x = 392,827,191.66/21,933.22
  6. Step 6: Final answer
    x = 17,910.15

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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.