Home / 21,262,550.40-31,893,825.60-20,142,806.40

Finding the Fourth Proportional to 21,262,550.40, 31,893,825.60 and 20,142,806.40

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Solution

The fourth proportional to 21,262,550.40, 31,893,825.60 and 20,142,806.40 is: 30,214,209.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,262,550.40 : 31,893,825.60 = 20,142,806.40 : x
  2. Step 2: Convert to fraction form
    21,262,550.40/31,893,825.60 = 20,142,806.40/x
  3. Step 3: Cross multiply
    21,262,550.40x = 31,893,825.60 × 20,142,806.40
  4. Step 4: Simplify right side
    21,262,550.40x = 642,431,154,416,163.88
  5. Step 5: Solve for x
    x = 642,431,154,416,163.88/21,262,550.40
  6. Step 6: Final answer
    x = 30,214,209.60

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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.