Home / 20,905,421.43-31,368,394.66-9,399,007.54

Finding the Fourth Proportional to 20,905,421.43, 31,368,394.66 and 9,399,007.54

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Solution

The fourth proportional to 20,905,421.43, 31,368,394.66 and 9,399,007.54 is: 14,103,125.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,905,421.43 : 31,368,394.66 = 9,399,007.54 : x
  2. Step 2: Convert to fraction form
    20,905,421.43/31,368,394.66 = 9,399,007.54/x
  3. Step 3: Cross multiply
    20,905,421.43x = 31,368,394.66 × 9,399,007.54
  4. Step 4: Simplify right side
    20,905,421.43x = 294,831,777,927,035.69
  5. Step 5: Solve for x
    x = 294,831,777,927,035.69/20,905,421.43
  6. Step 6: Final answer
    x = 14,103,125.30

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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.