Home / 11,091.28-15,295.08-9,410.80

Finding the Fourth Proportional to 11,091.28, 15,295.08 and 9,410.80

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Solution

The fourth proportional to 11,091.28, 15,295.08 and 9,410.80 is: 12,977.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,091.28 : 15,295.08 = 9,410.80 : x
  2. Step 2: Convert to fraction form
    11,091.28/15,295.08 = 9,410.80/x
  3. Step 3: Cross multiply
    11,091.28x = 15,295.08 × 9,410.80
  4. Step 4: Simplify right side
    11,091.28x = 143,938,938.86
  5. Step 5: Solve for x
    x = 143,938,938.86/11,091.28
  6. Step 6: Final answer
    x = 12,977.67

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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.