Home / 18,926.63-28,381.29-7,071.70

Finding the Fourth Proportional to 18,926.63, 28,381.29 and 7,071.70

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Solution

The fourth proportional to 18,926.63, 28,381.29 and 7,071.70 is: 10,604.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,926.63 : 28,381.29 = 7,071.70 : x
  2. Step 2: Convert to fraction form
    18,926.63/28,381.29 = 7,071.70/x
  3. Step 3: Cross multiply
    18,926.63x = 28,381.29 × 7,071.70
  4. Step 4: Simplify right side
    18,926.63x = 200,703,977.45
  5. Step 5: Solve for x
    x = 200,703,977.45/18,926.63
  6. Step 6: Final answer
    x = 10,604.32

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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.