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Finding the Fourth Proportional to 22,360.53, 30,855.69 and 12,929.70

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Solution

The fourth proportional to 22,360.53, 30,855.69 and 12,929.70 is: 17,841.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,360.53 : 30,855.69 = 12,929.70 : x
  2. Step 2: Convert to fraction form
    22,360.53/30,855.69 = 12,929.70/x
  3. Step 3: Cross multiply
    22,360.53x = 30,855.69 × 12,929.70
  4. Step 4: Simplify right side
    22,360.53x = 398,954,814.99
  5. Step 5: Solve for x
    x = 398,954,814.99/22,360.53
  6. Step 6: Final answer
    x = 17,841.92

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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.