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Finding the Fourth Proportional to 30,646.77, 42,293.18 and 17,218.89

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Solution

The fourth proportional to 30,646.77, 42,293.18 and 17,218.89 is: 23,762.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,646.77 : 42,293.18 = 17,218.89 : x
  2. Step 2: Convert to fraction form
    30,646.77/42,293.18 = 17,218.89/x
  3. Step 3: Cross multiply
    30,646.77x = 42,293.18 × 17,218.89
  4. Step 4: Simplify right side
    30,646.77x = 728,241,316.61
  5. Step 5: Solve for x
    x = 728,241,316.61/30,646.77
  6. Step 6: Final answer
    x = 23,762.42

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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.