Home / 21,664,977.72-29,847,421.40-15,128,253.42

Finding the Fourth Proportional to 21,664,977.72, 29,847,421.40 and 15,128,253.42

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Solution

The fourth proportional to 21,664,977.72, 29,847,421.40 and 15,128,253.42 is: 20,841,902.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,664,977.72 : 29,847,421.40 = 15,128,253.42 : x
  2. Step 2: Convert to fraction form
    21,664,977.72/29,847,421.40 = 15,128,253.42/x
  3. Step 3: Cross multiply
    21,664,977.72x = 29,847,421.40 × 15,128,253.42
  4. Step 4: Simplify right side
    21,664,977.72x = 451,539,354,872,731.19
  5. Step 5: Solve for x
    x = 451,539,354,872,731.19/21,664,977.72
  6. Step 6: Final answer
    x = 20,841,902.57

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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.