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Finding the Fourth Proportional to 22,400.70, 30,913.50 and 12,329.70

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Solution

The fourth proportional to 22,400.70, 30,913.50 and 12,329.70 is: 17,015.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,400.70 : 30,913.50 = 12,329.70 : x
  2. Step 2: Convert to fraction form
    22,400.70/30,913.50 = 12,329.70/x
  3. Step 3: Cross multiply
    22,400.70x = 30,913.50 × 12,329.70
  4. Step 4: Simplify right side
    22,400.70x = 381,154,180.95
  5. Step 5: Solve for x
    x = 381,154,180.95/22,400.70
  6. Step 6: Final answer
    x = 17,015.28

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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.