Home / 30,853.88-42,578.16-16,706.68

Finding the Fourth Proportional to 30,853.88, 42,578.16 and 16,706.68

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Solution

The fourth proportional to 30,853.88, 42,578.16 and 16,706.68 is: 23,055.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,853.88 : 42,578.16 = 16,706.68 : x
  2. Step 2: Convert to fraction form
    30,853.88/42,578.16 = 16,706.68/x
  3. Step 3: Cross multiply
    30,853.88x = 42,578.16 × 16,706.68
  4. Step 4: Simplify right side
    30,853.88x = 711,339,694.11
  5. Step 5: Solve for x
    x = 711,339,694.11/30,853.88
  6. Step 6: Final answer
    x = 23,055.11

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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.