Home / 10,129,670.90-15,185,991.39-8,205,811.43

Finding the Fourth Proportional to 10,129,670.90, 15,185,991.39 and 8,205,811.43

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Solution

The fourth proportional to 10,129,670.90, 15,185,991.39 and 8,205,811.43 is: 12,301,819.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129,670.90 : 15,185,991.39 = 8,205,811.43 : x
  2. Step 2: Convert to fraction form
    10,129,670.90/15,185,991.39 = 8,205,811.43/x
  3. Step 3: Cross multiply
    10,129,670.90x = 15,185,991.39 × 8,205,811.43
  4. Step 4: Simplify right side
    10,129,670.90x = 124,613,381,617,241.84
  5. Step 5: Solve for x
    x = 124,613,381,617,241.84/10,129,670.90
  6. Step 6: Final answer
    x = 12,301,819.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.