Home / 21,274.54-31,970.13-20,066.83

Finding the Fourth Proportional to 21,274.54, 31,970.13 and 20,066.83

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Solution

The fourth proportional to 21,274.54, 31,970.13 and 20,066.83 is: 30,155.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.54 : 31,970.13 = 20,066.83 : x
  2. Step 2: Convert to fraction form
    21,274.54/31,970.13 = 20,066.83/x
  3. Step 3: Cross multiply
    21,274.54x = 31,970.13 × 20,066.83
  4. Step 4: Simplify right side
    21,274.54x = 641,539,163.79
  5. Step 5: Solve for x
    x = 641,539,163.79/21,274.54
  6. Step 6: Final answer
    x = 30,155.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.