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Finding the Fourth Proportional to 28,994,472.60, 43,491,708.90 and 13,877,928.60

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Solution

The fourth proportional to 28,994,472.60, 43,491,708.90 and 13,877,928.60 is: 20,816,892.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,994,472.60 : 43,491,708.90 = 13,877,928.60 : x
  2. Step 2: Convert to fraction form
    28,994,472.60/43,491,708.90 = 13,877,928.60/x
  3. Step 3: Cross multiply
    28,994,472.60x = 43,491,708.90 × 13,877,928.60
  4. Step 4: Simplify right side
    28,994,472.60x = 603,574,830,806,184.50
  5. Step 5: Solve for x
    x = 603,574,830,806,184.50/28,994,472.60
  6. Step 6: Final answer
    x = 20,816,892.90

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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.