Home / 13,665.46-18,858.78-7,697.24

Finding the Fourth Proportional to 13,665.46, 18,858.78 and 7,697.24

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Solution

The fourth proportional to 13,665.46, 18,858.78 and 7,697.24 is: 10,622.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.46 : 18,858.78 = 7,697.24 : x
  2. Step 2: Convert to fraction form
    13,665.46/18,858.78 = 7,697.24/x
  3. Step 3: Cross multiply
    13,665.46x = 18,858.78 × 7,697.24
  4. Step 4: Simplify right side
    13,665.46x = 145,160,555.77
  5. Step 5: Solve for x
    x = 145,160,555.77/13,665.46
  6. Step 6: Final answer
    x = 10,622.44

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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.