Home / 13,277.76-18,325.44-7,690.56

Finding the Fourth Proportional to 13,277.76, 18,325.44 and 7,690.56

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Solution

The fourth proportional to 13,277.76, 18,325.44 and 7,690.56 is: 10,614.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,277.76 : 18,325.44 = 7,690.56 : x
  2. Step 2: Convert to fraction form
    13,277.76/18,325.44 = 7,690.56/x
  3. Step 3: Cross multiply
    13,277.76x = 18,325.44 × 7,690.56
  4. Step 4: Simplify right side
    13,277.76x = 140,932,895.85
  5. Step 5: Solve for x
    x = 140,932,895.85/13,277.76
  6. Step 6: Final answer
    x = 10,614.21

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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.