Home / 20,905,590.15-31,362,739.20-10,536,636.78

Finding the Fourth Proportional to 20,905,590.15, 31,362,739.20 and 10,536,636.78

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Solution

The fourth proportional to 20,905,590.15, 31,362,739.20 and 10,536,636.78 is: 15,807,149.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,905,590.15 : 31,362,739.20 = 10,536,636.78 : x
  2. Step 2: Convert to fraction form
    20,905,590.15/31,362,739.20 = 10,536,636.78/x
  3. Step 3: Cross multiply
    20,905,590.15x = 31,362,739.20 × 10,536,636.78
  4. Step 4: Simplify right side
    20,905,590.15x = 330,457,791,376,267.75
  5. Step 5: Solve for x
    x = 330,457,791,376,267.75/20,905,590.15
  6. Step 6: Final answer
    x = 15,807,149.62

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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.