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Finding the Fourth Proportional to 22,455.51, 30,987 and 13,969.95

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Solution

The fourth proportional to 22,455.51, 30,987 and 13,969.95 is: 19,277.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,455.51 : 30,987 = 13,969.95 : x
  2. Step 2: Convert to fraction form
    22,455.51/30,987 = 13,969.95/x
  3. Step 3: Cross multiply
    22,455.51x = 30,987 × 13,969.95
  4. Step 4: Simplify right side
    22,455.51x = 432,886,840.65
  5. Step 5: Solve for x
    x = 432,886,840.65/22,455.51
  6. Step 6: Final answer
    x = 19,277.53

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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.