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Finding the Fourth Proportional to 17,817,620.60, 26,726,430.90 and 12,442,849.40

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Solution

The fourth proportional to 17,817,620.60, 26,726,430.90 and 12,442,849.40 is: 18,664,274.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,817,620.60 : 26,726,430.90 = 12,442,849.40 : x
  2. Step 2: Convert to fraction form
    17,817,620.60/26,726,430.90 = 12,442,849.40/x
  3. Step 3: Cross multiply
    17,817,620.60x = 26,726,430.90 × 12,442,849.40
  4. Step 4: Simplify right side
    17,817,620.60x = 332,552,954,688,206.44
  5. Step 5: Solve for x
    x = 332,552,954,688,206.44/17,817,620.60
  6. Step 6: Final answer
    x = 18,664,274.10

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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.