Home / 13,590,731.86-18,755,212.72-7,479,160.36

Finding the Fourth Proportional to 13,590,731.86, 18,755,212.72 and 7,479,160.36

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Solution

The fourth proportional to 13,590,731.86, 18,755,212.72 and 7,479,160.36 is: 10,321,242.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590,731.86 : 18,755,212.72 = 7,479,160.36 : x
  2. Step 2: Convert to fraction form
    13,590,731.86/18,755,212.72 = 7,479,160.36/x
  3. Step 3: Cross multiply
    13,590,731.86x = 18,755,212.72 × 7,479,160.36
  4. Step 4: Simplify right side
    13,590,731.86x = 140,273,243,518,791.78
  5. Step 5: Solve for x
    x = 140,273,243,518,791.78/13,590,731.86
  6. Step 6: Final answer
    x = 10,321,242.81

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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.