Home / 20,800,709-31,175,509.08-11,683,641.86

Finding the Fourth Proportional to 20,800,709, 31,175,509.08 and 11,683,641.86

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Solution

The fourth proportional to 20,800,709, 31,175,509.08 and 11,683,641.86 is: 17,511,109.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800,709 : 31,175,509.08 = 11,683,641.86 : x
  2. Step 2: Convert to fraction form
    20,800,709/31,175,509.08 = 11,683,641.86/x
  3. Step 3: Cross multiply
    20,800,709x = 31,175,509.08 × 11,683,641.86
  4. Step 4: Simplify right side
    20,800,709x = 364,243,482,893,898.06
  5. Step 5: Solve for x
    x = 364,243,482,893,898.06/20,800,709
  6. Step 6: Final answer
    x = 17,511,109.02

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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.