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Finding the Fourth Proportional to 12,447.76, 18,666.20 and 6,603.04

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Solution

The fourth proportional to 12,447.76, 18,666.20 and 6,603.04 is: 9,901.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,447.76 : 18,666.20 = 6,603.04 : x
  2. Step 2: Convert to fraction form
    12,447.76/18,666.20 = 6,603.04/x
  3. Step 3: Cross multiply
    12,447.76x = 18,666.20 × 6,603.04
  4. Step 4: Simplify right side
    12,447.76x = 123,253,665.25
  5. Step 5: Solve for x
    x = 123,253,665.25/12,447.76
  6. Step 6: Final answer
    x = 9,901.67

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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.