Home / 17,678.21-26,515.46-7,153.72

Finding the Fourth Proportional to 17,678.21, 26,515.46 and 7,153.72

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Solution

The fourth proportional to 17,678.21, 26,515.46 and 7,153.72 is: 10,729.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,678.21 : 26,515.46 = 7,153.72 : x
  2. Step 2: Convert to fraction form
    17,678.21/26,515.46 = 7,153.72/x
  3. Step 3: Cross multiply
    17,678.21x = 26,515.46 × 7,153.72
  4. Step 4: Simplify right side
    17,678.21x = 189,684,128.11
  5. Step 5: Solve for x
    x = 189,684,128.11/17,678.21
  6. Step 6: Final answer
    x = 10,729.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.