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Finding the Fourth Proportional to 30,424.78, 41,985.22 and 17,679.03

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Solution

The fourth proportional to 30,424.78, 41,985.22 and 17,679.03 is: 24,396.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,424.78 : 41,985.22 = 17,679.03 : x
  2. Step 2: Convert to fraction form
    30,424.78/41,985.22 = 17,679.03/x
  3. Step 3: Cross multiply
    30,424.78x = 41,985.22 × 17,679.03
  4. Step 4: Simplify right side
    30,424.78x = 742,257,963.94
  5. Step 5: Solve for x
    x = 742,257,963.94/30,424.78
  6. Step 6: Final answer
    x = 24,396.49

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1.5x scale

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.