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Finding the Fourth Proportional to 11,472.12, 17,208.18 and 4,545

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Solution

The fourth proportional to 11,472.12, 17,208.18 and 4,545 is: 6,817.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,472.12 : 17,208.18 = 4,545 : x
  2. Step 2: Convert to fraction form
    11,472.12/17,208.18 = 4,545/x
  3. Step 3: Cross multiply
    11,472.12x = 17,208.18 × 4,545
  4. Step 4: Simplify right side
    11,472.12x = 78,211,178.10
  5. Step 5: Solve for x
    x = 78,211,178.10/11,472.12
  6. Step 6: Final answer
    x = 6,817.50

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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.