Home / 18,567,939.90-27,851,909.85-12,899,235.90

Finding the Fourth Proportional to 18,567,939.90, 27,851,909.85 and 12,899,235.90

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Solution

The fourth proportional to 18,567,939.90, 27,851,909.85 and 12,899,235.90 is: 19,348,853.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,567,939.90 : 27,851,909.85 = 12,899,235.90 : x
  2. Step 2: Convert to fraction form
    18,567,939.90/27,851,909.85 = 12,899,235.90/x
  3. Step 3: Cross multiply
    18,567,939.90x = 27,851,909.85 × 12,899,235.90
  4. Step 4: Simplify right side
    18,567,939.90x = 359,268,355,420,683.62
  5. Step 5: Solve for x
    x = 359,268,355,420,683.62/18,567,939.90
  6. Step 6: Final answer
    x = 19,348,853.85

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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.