Home / 13,720,899.78-18,939,081.60-8,826,121.87

Finding the Fourth Proportional to 13,720,899.78, 18,939,081.60 and 8,826,121.87

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Solution

The fourth proportional to 13,720,899.78, 18,939,081.60 and 8,826,121.87 is: 12,182,775.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720,899.78 : 18,939,081.60 = 8,826,121.87 : x
  2. Step 2: Convert to fraction form
    13,720,899.78/18,939,081.60 = 8,826,121.87/x
  3. Step 3: Cross multiply
    13,720,899.78x = 18,939,081.60 × 8,826,121.87
  4. Step 4: Simplify right side
    13,720,899.78x = 167,158,642,291,159.53
  5. Step 5: Solve for x
    x = 167,158,642,291,159.53/13,720,899.78
  6. Step 6: Final answer
    x = 12,182,775.54

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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.