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Finding the Fourth Proportional to 32,700.96, 49,057.92 and 12,988.80

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Solution

The fourth proportional to 32,700.96, 49,057.92 and 12,988.80 is: 19,485.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,700.96 : 49,057.92 = 12,988.80 : x
  2. Step 2: Convert to fraction form
    32,700.96/49,057.92 = 12,988.80/x
  3. Step 3: Cross multiply
    32,700.96x = 49,057.92 × 12,988.80
  4. Step 4: Simplify right side
    32,700.96x = 637,203,511.30
  5. Step 5: Solve for x
    x = 637,203,511.30/32,700.96
  6. Step 6: Final answer
    x = 19,485.77

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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.