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Finding the Fourth Proportional to 28,880.72, 43,337.72 and 12,239.44

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Solution

The fourth proportional to 28,880.72, 43,337.72 and 12,239.44 is: 18,366.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,880.72 : 43,337.72 = 12,239.44 : x
  2. Step 2: Convert to fraction form
    28,880.72/43,337.72 = 12,239.44/x
  3. Step 3: Cross multiply
    28,880.72x = 43,337.72 × 12,239.44
  4. Step 4: Simplify right side
    28,880.72x = 530,429,423.68
  5. Step 5: Solve for x
    x = 530,429,423.68/28,880.72
  6. Step 6: Final answer
    x = 18,366.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.