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Finding the Fourth Proportional to 13,572, 20,357.36 and 3,576.52

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Solution

The fourth proportional to 13,572, 20,357.36 and 3,576.52 is: 5,364.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,572 : 20,357.36 = 3,576.52 : x
  2. Step 2: Convert to fraction form
    13,572/20,357.36 = 3,576.52/x
  3. Step 3: Cross multiply
    13,572x = 20,357.36 × 3,576.52
  4. Step 4: Simplify right side
    13,572x = 72,808,505.19
  5. Step 5: Solve for x
    x = 72,808,505.19/13,572
  6. Step 6: Final answer
    x = 5,364.61

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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.