Home / 28,474,752.72-39,294,962.80-15,421,712.78

Finding the Fourth Proportional to 28,474,752.72, 39,294,962.80 and 15,421,712.78

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Solution

The fourth proportional to 28,474,752.72, 39,294,962.80 and 15,421,712.78 is: 21,281,857.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,474,752.72 : 39,294,962.80 = 15,421,712.78 : x
  2. Step 2: Convert to fraction form
    28,474,752.72/39,294,962.80 = 15,421,712.78/x
  3. Step 3: Cross multiply
    28,474,752.72x = 39,294,962.80 × 15,421,712.78
  4. Step 4: Simplify right side
    28,474,752.72x = 605,995,630,062,067.75
  5. Step 5: Solve for x
    x = 605,995,630,062,067.75/28,474,752.72
  6. Step 6: Final answer
    x = 21,281,857.51

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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.