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Finding the Fourth Proportional to 14,135,985.60, 21,203,978.40 and 9,657,009.60

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Solution

The fourth proportional to 14,135,985.60, 21,203,978.40 and 9,657,009.60 is: 14,485,514.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,135,985.60 : 21,203,978.40 = 9,657,009.60 : x
  2. Step 2: Convert to fraction form
    14,135,985.60/21,203,978.40 = 9,657,009.60/x
  3. Step 3: Cross multiply
    14,135,985.60x = 21,203,978.40 × 9,657,009.60
  4. Step 4: Simplify right side
    14,135,985.60x = 204,767,022,966,992.62
  5. Step 5: Solve for x
    x = 204,767,022,966,992.62/14,135,985.60
  6. Step 6: Final answer
    x = 14,485,514.40

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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.