Home / 21,967.12-33,089.02-20,005.21

Finding the Fourth Proportional to 21,967.12, 33,089.02 and 20,005.21

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Solution

The fourth proportional to 21,967.12, 33,089.02 and 20,005.21 is: 30,133.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,967.12 : 33,089.02 = 20,005.21 : x
  2. Step 2: Convert to fraction form
    21,967.12/33,089.02 = 20,005.21/x
  3. Step 3: Cross multiply
    21,967.12x = 33,089.02 × 20,005.21
  4. Step 4: Simplify right side
    21,967.12x = 661,952,793.79
  5. Step 5: Solve for x
    x = 661,952,793.79/21,967.12
  6. Step 6: Final answer
    x = 30,133.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.