Home / 20,098.65-30,141.93-12,613.56

Finding the Fourth Proportional to 20,098.65, 30,141.93 and 12,613.56

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Solution

The fourth proportional to 20,098.65, 30,141.93 and 12,613.56 is: 18,916.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,098.65 : 30,141.93 = 12,613.56 : x
  2. Step 2: Convert to fraction form
    20,098.65/30,141.93 = 12,613.56/x
  3. Step 3: Cross multiply
    20,098.65x = 30,141.93 × 12,613.56
  4. Step 4: Simplify right side
    20,098.65x = 380,197,042.57
  5. Step 5: Solve for x
    x = 380,197,042.57/20,098.65
  6. Step 6: Final answer
    x = 18,916.55

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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.