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Finding the Fourth Proportional to 17,868.79, 26,794.50 and 5,386.50

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Solution

The fourth proportional to 17,868.79, 26,794.50 and 5,386.50 is: 8,077.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,868.79 : 26,794.50 = 5,386.50 : x
  2. Step 2: Convert to fraction form
    17,868.79/26,794.50 = 5,386.50/x
  3. Step 3: Cross multiply
    17,868.79x = 26,794.50 × 5,386.50
  4. Step 4: Simplify right side
    17,868.79x = 144,328,574.25
  5. Step 5: Solve for x
    x = 144,328,574.25/17,868.79
  6. Step 6: Final answer
    x = 8,077.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.