Home / 20,990.07-28,954.80-14,606.55

Finding the Fourth Proportional to 20,990.07, 28,954.80 and 14,606.55

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Solution

The fourth proportional to 20,990.07, 28,954.80 and 14,606.55 is: 20,149.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,990.07 : 28,954.80 = 14,606.55 : x
  2. Step 2: Convert to fraction form
    20,990.07/28,954.80 = 14,606.55/x
  3. Step 3: Cross multiply
    20,990.07x = 28,954.80 × 14,606.55
  4. Step 4: Simplify right side
    20,990.07x = 422,929,733.94
  5. Step 5: Solve for x
    x = 422,929,733.94/20,990.07
  6. Step 6: Final answer
    x = 20,149.04

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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.