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Finding the Fourth Proportional to 12,603.79, 18,904.24 and 3,370.51

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Solution

The fourth proportional to 12,603.79, 18,904.24 and 3,370.51 is: 5,055.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.79 : 18,904.24 = 3,370.51 : x
  2. Step 2: Convert to fraction form
    12,603.79/18,904.24 = 3,370.51/x
  3. Step 3: Cross multiply
    12,603.79x = 18,904.24 × 3,370.51
  4. Step 4: Simplify right side
    12,603.79x = 63,716,818.59
  5. Step 5: Solve for x
    x = 63,716,818.59/12,603.79
  6. Step 6: Final answer
    x = 5,055.37

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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.