Home / 20,845,950.40-31,289,920.80-10,071,913.60

Finding the Fourth Proportional to 20,845,950.40, 31,289,920.80 and 10,071,913.60

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Solution

The fourth proportional to 20,845,950.40, 31,289,920.80 and 10,071,913.60 is: 15,118,014.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845,950.40 : 31,289,920.80 = 10,071,913.60 : x
  2. Step 2: Convert to fraction form
    20,845,950.40/31,289,920.80 = 10,071,913.60/x
  3. Step 3: Cross multiply
    20,845,950.40x = 31,289,920.80 × 10,071,913.60
  4. Step 4: Simplify right side
    20,845,950.40x = 315,149,378,848,442.88
  5. Step 5: Solve for x
    x = 315,149,378,848,442.88/20,845,950.40
  6. Step 6: Final answer
    x = 15,118,014.42

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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.