Home / 28,516.46-42,759.29-20,212.74

Finding the Fourth Proportional to 28,516.46, 42,759.29 and 20,212.74

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Solution

The fourth proportional to 28,516.46, 42,759.29 and 20,212.74 is: 30,308.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516.46 : 42,759.29 = 20,212.74 : x
  2. Step 2: Convert to fraction form
    28,516.46/42,759.29 = 20,212.74/x
  3. Step 3: Cross multiply
    28,516.46x = 42,759.29 × 20,212.74
  4. Step 4: Simplify right side
    28,516.46x = 864,282,461.89
  5. Step 5: Solve for x
    x = 864,282,461.89/28,516.46
  6. Step 6: Final answer
    x = 30,308.20

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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.