Home / 20,854,472.80-31,281,709.20-19,342,818.40

Finding the Fourth Proportional to 20,854,472.80, 31,281,709.20 and 19,342,818.40

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Solution

The fourth proportional to 20,854,472.80, 31,281,709.20 and 19,342,818.40 is: 29,014,227.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854,472.80 : 31,281,709.20 = 19,342,818.40 : x
  2. Step 2: Convert to fraction form
    20,854,472.80/31,281,709.20 = 19,342,818.40/x
  3. Step 3: Cross multiply
    20,854,472.80x = 31,281,709.20 × 19,342,818.40
  4. Step 4: Simplify right side
    20,854,472.80x = 605,076,420,297,209.25
  5. Step 5: Solve for x
    x = 605,076,420,297,209.25/20,854,472.80
  6. Step 6: Final answer
    x = 29,014,227.60

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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.