Home / 9,190.21-12,688.56-8,193.76

Finding the Fourth Proportional to 9,190.21, 12,688.56 and 8,193.76

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Solution

The fourth proportional to 9,190.21, 12,688.56 and 8,193.76 is: 11,312.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,190.21 : 12,688.56 = 8,193.76 : x
  2. Step 2: Convert to fraction form
    9,190.21/12,688.56 = 8,193.76/x
  3. Step 3: Cross multiply
    9,190.21x = 12,688.56 × 8,193.76
  4. Step 4: Simplify right side
    9,190.21x = 103,967,015.39
  5. Step 5: Solve for x
    x = 103,967,015.39/9,190.21
  6. Step 6: Final answer
    x = 11,312.80

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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.