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Finding the Fourth Proportional to 30,674.19, 42,341.22 and 20,596.98

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Solution

The fourth proportional to 30,674.19, 42,341.22 and 20,596.98 is: 28,431.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,674.19 : 42,341.22 = 20,596.98 : x
  2. Step 2: Convert to fraction form
    30,674.19/42,341.22 = 20,596.98/x
  3. Step 3: Cross multiply
    30,674.19x = 42,341.22 × 20,596.98
  4. Step 4: Simplify right side
    30,674.19x = 872,101,261.52
  5. Step 5: Solve for x
    x = 872,101,261.52/30,674.19
  6. Step 6: Final answer
    x = 28,431.11

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.