Home / 18,784,120.42-28,175,779.50-5,137,266.86

Finding the Fourth Proportional to 18,784,120.42, 28,175,779.50 and 5,137,266.86

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Solution

The fourth proportional to 18,784,120.42, 28,175,779.50 and 5,137,266.86 is: 7,705,790.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,784,120.42 : 28,175,779.50 = 5,137,266.86 : x
  2. Step 2: Convert to fraction form
    18,784,120.42/28,175,779.50 = 5,137,266.86/x
  3. Step 3: Cross multiply
    18,784,120.42x = 28,175,779.50 × 5,137,266.86
  4. Step 4: Simplify right side
    18,784,120.42x = 144,746,498,280,017.38
  5. Step 5: Solve for x
    x = 144,746,498,280,017.38/18,784,120.42
  6. Step 6: Final answer
    x = 7,705,790.59

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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.