Home / 15,447,939.88-21,318,646.40-8,921,450.74

Finding the Fourth Proportional to 15,447,939.88, 21,318,646.40 and 8,921,450.74

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Solution

The fourth proportional to 15,447,939.88, 21,318,646.40 and 8,921,450.74 is: 12,311,884.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447,939.88 : 21,318,646.40 = 8,921,450.74 : x
  2. Step 2: Convert to fraction form
    15,447,939.88/21,318,646.40 = 8,921,450.74/x
  3. Step 3: Cross multiply
    15,447,939.88x = 21,318,646.40 × 8,921,450.74
  4. Step 4: Simplify right side
    15,447,939.88x = 190,193,253,701,078.31
  5. Step 5: Solve for x
    x = 190,193,253,701,078.31/15,447,939.88
  6. Step 6: Final answer
    x = 12,311,884.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.