Home / 13,325.07-18,388.32-7,659.67

Finding the Fourth Proportional to 13,325.07, 18,388.32 and 7,659.67

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Solution

The fourth proportional to 13,325.07, 18,388.32 and 7,659.67 is: 10,570.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.07 : 18,388.32 = 7,659.67 : x
  2. Step 2: Convert to fraction form
    13,325.07/18,388.32 = 7,659.67/x
  3. Step 3: Cross multiply
    13,325.07x = 18,388.32 × 7,659.67
  4. Step 4: Simplify right side
    13,325.07x = 140,848,474.56
  5. Step 5: Solve for x
    x = 140,848,474.56/13,325.07
  6. Step 6: Final answer
    x = 10,570.18

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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.