Home / 20,809,639.70-31,214,459.55-19,959,334.10

Finding the Fourth Proportional to 20,809,639.70, 31,214,459.55 and 19,959,334.10

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Solution

The fourth proportional to 20,809,639.70, 31,214,459.55 and 19,959,334.10 is: 29,939,001.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809,639.70 : 31,214,459.55 = 19,959,334.10 : x
  2. Step 2: Convert to fraction form
    20,809,639.70/31,214,459.55 = 19,959,334.10/x
  3. Step 3: Cross multiply
    20,809,639.70x = 31,214,459.55 × 19,959,334.10
  4. Step 4: Simplify right side
    20,809,639.70x = 623,019,826,909,385.75
  5. Step 5: Solve for x
    x = 623,019,826,909,385.75/20,809,639.70
  6. Step 6: Final answer
    x = 29,939,001.15

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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.