Home / 20,975.17-31,450.20-14,229.05

Finding the Fourth Proportional to 20,975.17, 31,450.20 and 14,229.05

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Solution

The fourth proportional to 20,975.17, 31,450.20 and 14,229.05 is: 21,335.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.17 : 31,450.20 = 14,229.05 : x
  2. Step 2: Convert to fraction form
    20,975.17/31,450.20 = 14,229.05/x
  3. Step 3: Cross multiply
    20,975.17x = 31,450.20 × 14,229.05
  4. Step 4: Simplify right side
    20,975.17x = 447,506,337.74
  5. Step 5: Solve for x
    x = 447,506,337.74/20,975.17
  6. Step 6: Final answer
    x = 21,335.05

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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.