Home / 30,918.84-42,668.27-16,771.96

Finding the Fourth Proportional to 30,918.84, 42,668.27 and 16,771.96

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Solution

The fourth proportional to 30,918.84, 42,668.27 and 16,771.96 is: 23,145.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,918.84 : 42,668.27 = 16,771.96 : x
  2. Step 2: Convert to fraction form
    30,918.84/42,668.27 = 16,771.96/x
  3. Step 3: Cross multiply
    30,918.84x = 42,668.27 × 16,771.96
  4. Step 4: Simplify right side
    30,918.84x = 715,630,517.71
  5. Step 5: Solve for x
    x = 715,630,517.71/30,918.84
  6. Step 6: Final answer
    x = 23,145.45

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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.