Home / 20,423.46-30,613.40-11,639.46

Finding the Fourth Proportional to 20,423.46, 30,613.40 and 11,639.46

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Solution

The fourth proportional to 20,423.46, 30,613.40 and 11,639.46 is: 17,446.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.46 : 30,613.40 = 11,639.46 : x
  2. Step 2: Convert to fraction form
    20,423.46/30,613.40 = 11,639.46/x
  3. Step 3: Cross multiply
    20,423.46x = 30,613.40 × 11,639.46
  4. Step 4: Simplify right side
    20,423.46x = 356,323,320.80
  5. Step 5: Solve for x
    x = 356,323,320.80/20,423.46
  6. Step 6: Final answer
    x = 17,446.77

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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.