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Finding the Fourth Proportional to 20,392.49, 30,583.98 and 5,602.59

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Solution

The fourth proportional to 20,392.49, 30,583.98 and 5,602.59 is: 8,402.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392.49 : 30,583.98 = 5,602.59 : x
  2. Step 2: Convert to fraction form
    20,392.49/30,583.98 = 5,602.59/x
  3. Step 3: Cross multiply
    20,392.49x = 30,583.98 × 5,602.59
  4. Step 4: Simplify right side
    20,392.49x = 171,349,500.51
  5. Step 5: Solve for x
    x = 171,349,500.51/20,392.49
  6. Step 6: Final answer
    x = 8,402.58

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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.