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Finding the Fourth Proportional to 30,866.69, 42,596.04 and 16,719.53

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Solution

The fourth proportional to 30,866.69, 42,596.04 and 16,719.53 is: 23,072.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,866.69 : 42,596.04 = 16,719.53 : x
  2. Step 2: Convert to fraction form
    30,866.69/42,596.04 = 16,719.53/x
  3. Step 3: Cross multiply
    30,866.69x = 42,596.04 × 16,719.53
  4. Step 4: Simplify right side
    30,866.69x = 712,185,791.55
  5. Step 5: Solve for x
    x = 712,185,791.55/30,866.69
  6. Step 6: Final answer
    x = 23,072.96

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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.