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Finding the Fourth Proportional to 22,384.46, 30,890.04 and 12,312.68

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Solution

The fourth proportional to 22,384.46, 30,890.04 and 12,312.68 is: 16,991.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,384.46 : 30,890.04 = 12,312.68 : x
  2. Step 2: Convert to fraction form
    22,384.46/30,890.04 = 12,312.68/x
  3. Step 3: Cross multiply
    22,384.46x = 30,890.04 × 12,312.68
  4. Step 4: Simplify right side
    22,384.46x = 380,338,961.69
  5. Step 5: Solve for x
    x = 380,338,961.69/22,384.46
  6. Step 6: Final answer
    x = 16,991.21

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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.