Home / 13,789,643.45-19,028,299.72-8,490,496.89

Finding the Fourth Proportional to 13,789,643.45, 19,028,299.72 and 8,490,496.89

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Solution

The fourth proportional to 13,789,643.45, 19,028,299.72 and 8,490,496.89 is: 11,716,018.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789,643.45 : 19,028,299.72 = 8,490,496.89 : x
  2. Step 2: Convert to fraction form
    13,789,643.45/19,028,299.72 = 8,490,496.89/x
  3. Step 3: Cross multiply
    13,789,643.45x = 19,028,299.72 × 8,490,496.89
  4. Step 4: Simplify right side
    13,789,643.45x = 161,559,719,594,647.88
  5. Step 5: Solve for x
    x = 161,559,719,594,647.88/13,789,643.45
  6. Step 6: Final answer
    x = 11,716,018.63

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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.