Home / 20,276.42-30,389.52-11,484.68

Finding the Fourth Proportional to 20,276.42, 30,389.52 and 11,484.68

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Solution

The fourth proportional to 20,276.42, 30,389.52 and 11,484.68 is: 17,212.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.42 : 30,389.52 = 11,484.68 : x
  2. Step 2: Convert to fraction form
    20,276.42/30,389.52 = 11,484.68/x
  3. Step 3: Cross multiply
    20,276.42x = 30,389.52 × 11,484.68
  4. Step 4: Simplify right side
    20,276.42x = 349,013,912.55
  5. Step 5: Solve for x
    x = 349,013,912.55/20,276.42
  6. Step 6: Final answer
    x = 17,212.80

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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.