Home / 15,438,441-21,291,103.62-9,637,758.84

Finding the Fourth Proportional to 15,438,441, 21,291,103.62 and 9,637,758.84

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Solution

The fourth proportional to 15,438,441, 21,291,103.62 and 9,637,758.84 is: 13,291,401.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,438,441 : 21,291,103.62 = 9,637,758.84 : x
  2. Step 2: Convert to fraction form
    15,438,441/21,291,103.62 = 9,637,758.84/x
  3. Step 3: Cross multiply
    15,438,441x = 21,291,103.62 × 9,637,758.84
  4. Step 4: Simplify right side
    15,438,441x = 205,198,522,127,011
  5. Step 5: Solve for x
    x = 205,198,522,127,011/15,438,441
  6. Step 6: Final answer
    x = 13,291,401.78

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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.