Home / 20,687,689.20-31,045,530.60-9,322,287.60

Finding the Fourth Proportional to 20,687,689.20, 31,045,530.60 and 9,322,287.60

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Solution

The fourth proportional to 20,687,689.20, 31,045,530.60 and 9,322,287.60 is: 13,989,738.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,689.20 : 31,045,530.60 = 9,322,287.60 : x
  2. Step 2: Convert to fraction form
    20,687,689.20/31,045,530.60 = 9,322,287.60/x
  3. Step 3: Cross multiply
    20,687,689.20x = 31,045,530.60 × 9,322,287.60
  4. Step 4: Simplify right side
    20,687,689.20x = 289,415,364,947,800.56
  5. Step 5: Solve for x
    x = 289,415,364,947,800.56/20,687,689.20
  6. Step 6: Final answer
    x = 13,989,738.64

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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.