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Finding the Fourth Proportional to 17,612,985.60, 26,419,478.40 and 12,238,214.40

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Solution

The fourth proportional to 17,612,985.60, 26,419,478.40 and 12,238,214.40 is: 18,357,321.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,612,985.60 : 26,419,478.40 = 12,238,214.40 : x
  2. Step 2: Convert to fraction form
    17,612,985.60/26,419,478.40 = 12,238,214.40/x
  3. Step 3: Cross multiply
    17,612,985.60x = 26,419,478.40 × 12,238,214.40
  4. Step 4: Simplify right side
    17,612,985.60x = 323,327,240,995,368.94
  5. Step 5: Solve for x
    x = 323,327,240,995,368.94/17,612,985.60
  6. Step 6: Final answer
    x = 18,357,321.60

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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.