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Finding the Fourth Proportional to 30,866.67, 42,595.97 and 16,719.57

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Solution

The fourth proportional to 30,866.67, 42,595.97 and 16,719.57 is: 23,072.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,866.67 : 42,595.97 = 16,719.57 : x
  2. Step 2: Convert to fraction form
    30,866.67/42,595.97 = 16,719.57/x
  3. Step 3: Cross multiply
    30,866.67x = 42,595.97 × 16,719.57
  4. Step 4: Simplify right side
    30,866.67x = 712,186,218.54
  5. Step 5: Solve for x
    x = 712,186,218.54/30,866.67
  6. Step 6: Final answer
    x = 23,072.99

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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.