Home / 12,945,719.40-19,423,244.70-5,378,116.20

Finding the Fourth Proportional to 12,945,719.40, 19,423,244.70 and 5,378,116.20

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Solution

The fourth proportional to 12,945,719.40, 19,423,244.70 and 5,378,116.20 is: 8,069,112.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945,719.40 : 19,423,244.70 = 5,378,116.20 : x
  2. Step 2: Convert to fraction form
    12,945,719.40/19,423,244.70 = 5,378,116.20/x
  3. Step 3: Cross multiply
    12,945,719.40x = 19,423,244.70 × 5,378,116.20
  4. Step 4: Simplify right side
    12,945,719.40x = 104,460,466,977,634.14
  5. Step 5: Solve for x
    x = 104,460,466,977,634.14/12,945,719.40
  6. Step 6: Final answer
    x = 8,069,112.56

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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.