Home / 20,319.40-27,982.26-16,749.80

Finding the Fourth Proportional to 20,319.40, 27,982.26 and 16,749.80

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Solution

The fourth proportional to 20,319.40, 27,982.26 and 16,749.80 is: 23,066.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,319.40 : 27,982.26 = 16,749.80 : x
  2. Step 2: Convert to fraction form
    20,319.40/27,982.26 = 16,749.80/x
  3. Step 3: Cross multiply
    20,319.40x = 27,982.26 × 16,749.80
  4. Step 4: Simplify right side
    20,319.40x = 468,697,258.55
  5. Step 5: Solve for x
    x = 468,697,258.55/20,319.40
  6. Step 6: Final answer
    x = 23,066.49

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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.