Home / 10,940.81-15,118.75-8,950.64

Finding the Fourth Proportional to 10,940.81, 15,118.75 and 8,950.64

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Solution

The fourth proportional to 10,940.81, 15,118.75 and 8,950.64 is: 12,368.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,940.81 : 15,118.75 = 8,950.64 : x
  2. Step 2: Convert to fraction form
    10,940.81/15,118.75 = 8,950.64/x
  3. Step 3: Cross multiply
    10,940.81x = 15,118.75 × 8,950.64
  4. Step 4: Simplify right side
    10,940.81x = 135,322,368.15
  5. Step 5: Solve for x
    x = 135,322,368.15/10,940.81
  6. Step 6: Final answer
    x = 12,368.59

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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.