Home / 20,199.39-30,300.71-5,408.19

Finding the Fourth Proportional to 20,199.39, 30,300.71 and 5,408.19

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Solution

The fourth proportional to 20,199.39, 30,300.71 and 5,408.19 is: 8,112.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199.39 : 30,300.71 = 5,408.19 : x
  2. Step 2: Convert to fraction form
    20,199.39/30,300.71 = 5,408.19/x
  3. Step 3: Cross multiply
    20,199.39x = 30,300.71 × 5,408.19
  4. Step 4: Simplify right side
    20,199.39x = 163,871,969.77
  5. Step 5: Solve for x
    x = 163,871,969.77/20,199.39
  6. Step 6: Final answer
    x = 8,112.72

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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.