Home / 18,117.34-27,170.74-7,021.55

Finding the Fourth Proportional to 18,117.34, 27,170.74 and 7,021.55

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Solution

The fourth proportional to 18,117.34, 27,170.74 and 7,021.55 is: 10,530.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.34 : 27,170.74 = 7,021.55 : x
  2. Step 2: Convert to fraction form
    18,117.34/27,170.74 = 7,021.55/x
  3. Step 3: Cross multiply
    18,117.34x = 27,170.74 × 7,021.55
  4. Step 4: Simplify right side
    18,117.34x = 190,780,709.45
  5. Step 5: Solve for x
    x = 190,780,709.45/18,117.34
  6. Step 6: Final answer
    x = 10,530.28

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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.