Home / 21,315,913.20-31,937,128.20-9,933,015.60

Finding the Fourth Proportional to 21,315,913.20, 31,937,128.20 and 9,933,015.60

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Solution

The fourth proportional to 21,315,913.20, 31,937,128.20 and 9,933,015.60 is: 14,882,402.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315,913.20 : 31,937,128.20 = 9,933,015.60 : x
  2. Step 2: Convert to fraction form
    21,315,913.20/31,937,128.20 = 9,933,015.60/x
  3. Step 3: Cross multiply
    21,315,913.20x = 31,937,128.20 × 9,933,015.60
  4. Step 4: Simplify right side
    21,315,913.20x = 317,231,992,629,799.88
  5. Step 5: Solve for x
    x = 317,231,992,629,799.88/21,315,913.20
  6. Step 6: Final answer
    x = 14,882,402.16

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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.