Home / 18,627.47-25,705.66-13,868.67

Finding the Fourth Proportional to 18,627.47, 25,705.66 and 13,868.67

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Solution

The fourth proportional to 18,627.47, 25,705.66 and 13,868.67 is: 19,138.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,627.47 : 25,705.66 = 13,868.67 : x
  2. Step 2: Convert to fraction form
    18,627.47/25,705.66 = 13,868.67/x
  3. Step 3: Cross multiply
    18,627.47x = 25,705.66 × 13,868.67
  4. Step 4: Simplify right side
    18,627.47x = 356,503,315.67
  5. Step 5: Solve for x
    x = 356,503,315.67/18,627.47
  6. Step 6: Final answer
    x = 19,138.58

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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.