Home / 12,945,421.40-19,422,797.70-5,377,818.20

Finding the Fourth Proportional to 12,945,421.40, 19,422,797.70 and 5,377,818.20

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Solution

The fourth proportional to 12,945,421.40, 19,422,797.70 and 5,377,818.20 is: 8,068,665.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945,421.40 : 19,422,797.70 = 5,377,818.20 : x
  2. Step 2: Convert to fraction form
    12,945,421.40/19,422,797.70 = 5,377,818.20/x
  3. Step 3: Cross multiply
    12,945,421.40x = 19,422,797.70 × 5,377,818.20
  4. Step 4: Simplify right side
    12,945,421.40x = 104,452,274,965,978.14
  5. Step 5: Solve for x
    x = 104,452,274,965,978.14/12,945,421.40
  6. Step 6: Final answer
    x = 8,068,665.49

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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.