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Finding the Fourth Proportional to 22,336.84, 30,828.63 and 12,910.87

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Solution

The fourth proportional to 22,336.84, 30,828.63 and 12,910.87 is: 17,819.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,336.84 : 30,828.63 = 12,910.87 : x
  2. Step 2: Convert to fraction form
    22,336.84/30,828.63 = 12,910.87/x
  3. Step 3: Cross multiply
    22,336.84x = 30,828.63 × 12,910.87
  4. Step 4: Simplify right side
    22,336.84x = 398,024,434.21
  5. Step 5: Solve for x
    x = 398,024,434.21/22,336.84
  6. Step 6: Final answer
    x = 17,819.19

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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.