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Finding the Fourth Proportional to 22,375.68, 30,878.64 and 12,303.87

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Solution

The fourth proportional to 22,375.68, 30,878.64 and 12,303.87 is: 16,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,375.68 : 30,878.64 = 12,303.87 : x
  2. Step 2: Convert to fraction form
    22,375.68/30,878.64 = 12,303.87/x
  3. Step 3: Cross multiply
    22,375.68x = 30,878.64 × 12,303.87
  4. Step 4: Simplify right side
    22,375.68x = 379,926,772.34
  5. Step 5: Solve for x
    x = 379,926,772.34/22,375.68
  6. Step 6: Final answer
    x = 16,979.45

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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.