Home / 21,856,782.38-30,165,004.85-12,439,863.05

Finding the Fourth Proportional to 21,856,782.38, 30,165,004.85 and 12,439,863.05

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Solution

The fourth proportional to 21,856,782.38, 30,165,004.85 and 12,439,863.05 is: 17,168,516.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,856,782.38 : 30,165,004.85 = 12,439,863.05 : x
  2. Step 2: Convert to fraction form
    21,856,782.38/30,165,004.85 = 12,439,863.05/x
  3. Step 3: Cross multiply
    21,856,782.38x = 30,165,004.85 × 12,439,863.05
  4. Step 4: Simplify right side
    21,856,782.38x = 375,248,529,023,561.44
  5. Step 5: Solve for x
    x = 375,248,529,023,561.44/21,856,782.38
  6. Step 6: Final answer
    x = 17,168,516.51

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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.