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Finding the Fourth Proportional to 13,774,763.70, 20,662,145.55 and 12,286,728.90

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Solution

The fourth proportional to 13,774,763.70, 20,662,145.55 and 12,286,728.90 is: 18,430,093.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,774,763.70 : 20,662,145.55 = 12,286,728.90 : x
  2. Step 2: Convert to fraction form
    13,774,763.70/20,662,145.55 = 12,286,728.90/x
  3. Step 3: Cross multiply
    13,774,763.70x = 20,662,145.55 × 12,286,728.90
  4. Step 4: Simplify right side
    13,774,763.70x = 253,870,180,865,191.41
  5. Step 5: Solve for x
    x = 253,870,180,865,191.41/13,774,763.70
  6. Step 6: Final answer
    x = 18,430,093.35

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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.