Home / 20,510.66-28,304.84-12,017.80

Finding the Fourth Proportional to 20,510.66, 28,304.84 and 12,017.80

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Solution

The fourth proportional to 20,510.66, 28,304.84 and 12,017.80 is: 16,584.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510.66 : 28,304.84 = 12,017.80 : x
  2. Step 2: Convert to fraction form
    20,510.66/28,304.84 = 12,017.80/x
  3. Step 3: Cross multiply
    20,510.66x = 28,304.84 × 12,017.80
  4. Step 4: Simplify right side
    20,510.66x = 340,161,906.15
  5. Step 5: Solve for x
    x = 340,161,906.15/20,510.66
  6. Step 6: Final answer
    x = 16,584.64

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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.