Home / 20,255.81-30,283.88-17,170.31

Finding the Fourth Proportional to 20,255.81, 30,283.88 and 17,170.31

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Solution

The fourth proportional to 20,255.81, 30,283.88 and 17,170.31 is: 25,670.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.81 : 30,283.88 = 17,170.31 : x
  2. Step 2: Convert to fraction form
    20,255.81/30,283.88 = 17,170.31/x
  3. Step 3: Cross multiply
    20,255.81x = 30,283.88 × 17,170.31
  4. Step 4: Simplify right side
    20,255.81x = 519,983,597.46
  5. Step 5: Solve for x
    x = 519,983,597.46/20,255.81
  6. Step 6: Final answer
    x = 25,670.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.