Home / 20,778,303.90-31,140,276.30-11,172,999.90

Finding the Fourth Proportional to 20,778,303.90, 31,140,276.30 and 11,172,999.90

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Solution

The fourth proportional to 20,778,303.90, 31,140,276.30 and 11,172,999.90 is: 16,744,884.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778,303.90 : 31,140,276.30 = 11,172,999.90 : x
  2. Step 2: Convert to fraction form
    20,778,303.90/31,140,276.30 = 11,172,999.90/x
  3. Step 3: Cross multiply
    20,778,303.90x = 31,140,276.30 × 11,172,999.90
  4. Step 4: Simplify right side
    20,778,303.90x = 347,930,303,985,872.38
  5. Step 5: Solve for x
    x = 347,930,303,985,872.38/20,778,303.90
  6. Step 6: Final answer
    x = 16,744,884.74

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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.