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Finding the Fourth Proportional to 10,692,129.30, 16,019,531.55 and 9,199,137.30

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Solution

The fourth proportional to 10,692,129.30, 16,019,531.55 and 9,199,137.30 is: 13,782,649.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,692,129.30 : 16,019,531.55 = 9,199,137.30 : x
  2. Step 2: Convert to fraction form
    10,692,129.30/16,019,531.55 = 9,199,137.30/x
  3. Step 3: Cross multiply
    10,692,129.30x = 16,019,531.55 × 9,199,137.30
  4. Step 4: Simplify right side
    10,692,129.30x = 147,365,870,210,131.84
  5. Step 5: Solve for x
    x = 147,365,870,210,131.84/10,692,129.30
  6. Step 6: Final answer
    x = 13,782,649.47

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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.