Home / 12,945,855.40-19,423,448.70-5,378,252.20

Finding the Fourth Proportional to 12,945,855.40, 19,423,448.70 and 5,378,252.20

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Solution

The fourth proportional to 12,945,855.40, 19,423,448.70 and 5,378,252.20 is: 8,069,316.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945,855.40 : 19,423,448.70 = 5,378,252.20 : x
  2. Step 2: Convert to fraction form
    12,945,855.40/19,423,448.70 = 5,378,252.20/x
  3. Step 3: Cross multiply
    12,945,855.40x = 19,423,448.70 × 5,378,252.20
  4. Step 4: Simplify right side
    12,945,855.40x = 104,464,205,702,362.14
  5. Step 5: Solve for x
    x = 104,464,205,702,362.14/12,945,855.40
  6. Step 6: Final answer
    x = 8,069,316.59

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1.5x scale

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.