Home / 13,788-19,021.55-10,791.81

Finding the Fourth Proportional to 13,788, 19,021.55 and 10,791.81

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Solution

The fourth proportional to 13,788, 19,021.55 and 10,791.81 is: 14,888.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788 : 19,021.55 = 10,791.81 : x
  2. Step 2: Convert to fraction form
    13,788/19,021.55 = 10,791.81/x
  3. Step 3: Cross multiply
    13,788x = 19,021.55 × 10,791.81
  4. Step 4: Simplify right side
    13,788x = 205,276,899.55
  5. Step 5: Solve for x
    x = 205,276,899.55/13,788
  6. Step 6: Final answer
    x = 14,888.08

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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.