Home / 21,286,886.60-31,934,477.10-8,505,216.20

Finding the Fourth Proportional to 21,286,886.60, 31,934,477.10 and 8,505,216.20

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Solution

The fourth proportional to 21,286,886.60, 31,934,477.10 and 8,505,216.20 is: 12,759,481.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286,886.60 : 31,934,477.10 = 8,505,216.20 : x
  2. Step 2: Convert to fraction form
    21,286,886.60/31,934,477.10 = 8,505,216.20/x
  3. Step 3: Cross multiply
    21,286,886.60x = 31,934,477.10 × 8,505,216.20
  4. Step 4: Simplify right side
    21,286,886.60x = 271,609,631,969,449
  5. Step 5: Solve for x
    x = 271,609,631,969,449/21,286,886.60
  6. Step 6: Final answer
    x = 12,759,481.32

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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.