Home / 18,721,878.40-28,082,817.60-12,339,337.60

Finding the Fourth Proportional to 18,721,878.40, 28,082,817.60 and 12,339,337.60

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Solution

The fourth proportional to 18,721,878.40, 28,082,817.60 and 12,339,337.60 is: 18,509,006.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,878.40 : 28,082,817.60 = 12,339,337.60 : x
  2. Step 2: Convert to fraction form
    18,721,878.40/28,082,817.60 = 12,339,337.60/x
  3. Step 3: Cross multiply
    18,721,878.40x = 28,082,817.60 × 12,339,337.60
  4. Step 4: Simplify right side
    18,721,878.40x = 346,523,367,125,621.75
  5. Step 5: Solve for x
    x = 346,523,367,125,621.75/18,721,878.40
  6. Step 6: Final answer
    x = 18,509,006.40

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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.