Home / 30,855.76-42,580.97-16,708.57

Finding the Fourth Proportional to 30,855.76, 42,580.97 and 16,708.57

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Solution

The fourth proportional to 30,855.76, 42,580.97 and 16,708.57 is: 23,057.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,855.76 : 42,580.97 = 16,708.57 : x
  2. Step 2: Convert to fraction form
    30,855.76/42,580.97 = 16,708.57/x
  3. Step 3: Cross multiply
    30,855.76x = 42,580.97 × 16,708.57
  4. Step 4: Simplify right side
    30,855.76x = 711,467,117.91
  5. Step 5: Solve for x
    x = 711,467,117.91/30,855.76
  6. Step 6: Final answer
    x = 23,057.84

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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.