Home / 13,325.05-18,389.46-7,661.67

Finding the Fourth Proportional to 13,325.05, 18,389.46 and 7,661.67

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Solution

The fourth proportional to 13,325.05, 18,389.46 and 7,661.67 is: 10,573.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.05 : 18,389.46 = 7,661.67 : x
  2. Step 2: Convert to fraction form
    13,325.05/18,389.46 = 7,661.67/x
  3. Step 3: Cross multiply
    13,325.05x = 18,389.46 × 7,661.67
  4. Step 4: Simplify right side
    13,325.05x = 140,893,882.05
  5. Step 5: Solve for x
    x = 140,893,882.05/13,325.05
  6. Step 6: Final answer
    x = 10,573.61

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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.