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Finding the Fourth Proportional to 14,681,131.20, 21,978,151.20 and 10,911,326.40

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Solution

The fourth proportional to 14,681,131.20, 21,978,151.20 and 10,911,326.40 is: 16,334,625.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,681,131.20 : 21,978,151.20 = 10,911,326.40 : x
  2. Step 2: Convert to fraction form
    14,681,131.20/21,978,151.20 = 10,911,326.40/x
  3. Step 3: Cross multiply
    14,681,131.20x = 21,978,151.20 × 10,911,326.40
  4. Step 4: Simplify right side
    14,681,131.20x = 239,810,781,411,751.69
  5. Step 5: Solve for x
    x = 239,810,781,411,751.69/14,681,131.20
  6. Step 6: Final answer
    x = 16,334,625.59

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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.