Home / 20,336.92-28,063.63-11,384.35

Finding the Fourth Proportional to 20,336.92, 28,063.63 and 11,384.35

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Solution

The fourth proportional to 20,336.92, 28,063.63 and 11,384.35 is: 15,709.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.92 : 28,063.63 = 11,384.35 : x
  2. Step 2: Convert to fraction form
    20,336.92/28,063.63 = 11,384.35/x
  3. Step 3: Cross multiply
    20,336.92x = 28,063.63 × 11,384.35
  4. Step 4: Simplify right side
    20,336.92x = 319,486,045.87
  5. Step 5: Solve for x
    x = 319,486,045.87/20,336.92
  6. Step 6: Final answer
    x = 15,709.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.