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Finding the Fourth Proportional to 28,609.35, 39,483.21 and 16,512

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Solution

The fourth proportional to 28,609.35, 39,483.21 and 16,512 is: 22,787.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,609.35 : 39,483.21 = 16,512 : x
  2. Step 2: Convert to fraction form
    28,609.35/39,483.21 = 16,512/x
  3. Step 3: Cross multiply
    28,609.35x = 39,483.21 × 16,512
  4. Step 4: Simplify right side
    28,609.35x = 651,946,763.52
  5. Step 5: Solve for x
    x = 651,946,763.52/28,609.35
  6. Step 6: Final answer
    x = 22,787.89

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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.