Home / 11,140.58-15,370.88-8,775.38

Finding the Fourth Proportional to 11,140.58, 15,370.88 and 8,775.38

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Solution

The fourth proportional to 11,140.58, 15,370.88 and 8,775.38 is: 12,107.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,140.58 : 15,370.88 = 8,775.38 : x
  2. Step 2: Convert to fraction form
    11,140.58/15,370.88 = 8,775.38/x
  3. Step 3: Cross multiply
    11,140.58x = 15,370.88 × 8,775.38
  4. Step 4: Simplify right side
    11,140.58x = 134,885,312.93
  5. Step 5: Solve for x
    x = 134,885,312.93/11,140.58
  6. Step 6: Final answer
    x = 12,107.57

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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.