Home / 28,470,115.14-39,288,796.78-15,417,396.56

Finding the Fourth Proportional to 28,470,115.14, 39,288,796.78 and 15,417,396.56

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Solution

The fourth proportional to 28,470,115.14, 39,288,796.78 and 15,417,396.56 is: 21,276,027.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,470,115.14 : 39,288,796.78 = 15,417,396.56 : x
  2. Step 2: Convert to fraction form
    28,470,115.14/39,288,796.78 = 15,417,396.56/x
  3. Step 3: Cross multiply
    28,470,115.14x = 39,288,796.78 × 15,417,396.56
  4. Step 4: Simplify right side
    28,470,115.14x = 605,730,960,328,726.50
  5. Step 5: Solve for x
    x = 605,730,960,328,726.50/28,470,115.14
  6. Step 6: Final answer
    x = 21,276,027.77

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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.