Home / 18,991,810.80-28,487,716.20-18,162,500.40

Finding the Fourth Proportional to 18,991,810.80, 28,487,716.20 and 18,162,500.40

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Solution

The fourth proportional to 18,991,810.80, 28,487,716.20 and 18,162,500.40 is: 27,243,750.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991,810.80 : 28,487,716.20 = 18,162,500.40 : x
  2. Step 2: Convert to fraction form
    18,991,810.80/28,487,716.20 = 18,162,500.40/x
  3. Step 3: Cross multiply
    18,991,810.80x = 28,487,716.20 × 18,162,500.40
  4. Step 4: Simplify right side
    18,991,810.80x = 517,408,156,877,586.44
  5. Step 5: Solve for x
    x = 517,408,156,877,586.44/18,991,810.80
  6. Step 6: Final answer
    x = 27,243,750.60

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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.