Home / 12,945,857.40-19,423,451.70-5,378,254.20

Finding the Fourth Proportional to 12,945,857.40, 19,423,451.70 and 5,378,254.20

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Solution

The fourth proportional to 12,945,857.40, 19,423,451.70 and 5,378,254.20 is: 8,069,319.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945,857.40 : 19,423,451.70 = 5,378,254.20 : x
  2. Step 2: Convert to fraction form
    12,945,857.40/19,423,451.70 = 5,378,254.20/x
  3. Step 3: Cross multiply
    12,945,857.40x = 19,423,451.70 × 5,378,254.20
  4. Step 4: Simplify right side
    12,945,857.40x = 104,464,260,684,022.14
  5. Step 5: Solve for x
    x = 104,464,260,684,022.14/12,945,857.40
  6. Step 6: Final answer
    x = 8,069,319.59

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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.