Home / 20,793,491.30-28,686,231.50-13,920,187.70

Finding the Fourth Proportional to 20,793,491.30, 28,686,231.50 and 13,920,187.70

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Solution

The fourth proportional to 20,793,491.30, 28,686,231.50 and 13,920,187.70 is: 19,203,976.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793,491.30 : 28,686,231.50 = 13,920,187.70 : x
  2. Step 2: Convert to fraction form
    20,793,491.30/28,686,231.50 = 13,920,187.70/x
  3. Step 3: Cross multiply
    20,793,491.30x = 28,686,231.50 × 13,920,187.70
  4. Step 4: Simplify right side
    20,793,491.30x = 399,317,726,885,652.50
  5. Step 5: Solve for x
    x = 399,317,726,885,652.50/20,793,491.30
  6. Step 6: Final answer
    x = 19,203,976.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.