Home / 20,078,435.40-30,180,638.70-19,700,521.80

Finding the Fourth Proportional to 20,078,435.40, 30,180,638.70 and 19,700,521.80

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Solution

The fourth proportional to 20,078,435.40, 30,180,638.70 and 19,700,521.80 is: 29,612,582.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,078,435.40 : 30,180,638.70 = 19,700,521.80 : x
  2. Step 2: Convert to fraction form
    20,078,435.40/30,180,638.70 = 19,700,521.80/x
  3. Step 3: Cross multiply
    20,078,435.40x = 30,180,638.70 × 19,700,521.80
  4. Step 4: Simplify right side
    20,078,435.40x = 594,574,330,647,273.62
  5. Step 5: Solve for x
    x = 594,574,330,647,273.62/20,078,435.40
  6. Step 6: Final answer
    x = 29,612,582.79

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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.