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Finding the Fourth Proportional to 10,652,274.40, 15,978,411.60 and 8,951,663.20

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Solution

The fourth proportional to 10,652,274.40, 15,978,411.60 and 8,951,663.20 is: 13,427,494.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,652,274.40 : 15,978,411.60 = 8,951,663.20 : x
  2. Step 2: Convert to fraction form
    10,652,274.40/15,978,411.60 = 8,951,663.20/x
  3. Step 3: Cross multiply
    10,652,274.40x = 15,978,411.60 × 8,951,663.20
  4. Step 4: Simplify right side
    10,652,274.40x = 143,033,359,114,173.09
  5. Step 5: Solve for x
    x = 143,033,359,114,173.09/10,652,274.40
  6. Step 6: Final answer
    x = 13,427,494.80

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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.