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Finding the Fourth Proportional to 18,283.65, 25,222.14 and 11,111.67

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Solution

The fourth proportional to 18,283.65, 25,222.14 and 11,111.67 is: 15,328.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,283.65 : 25,222.14 = 11,111.67 : x
  2. Step 2: Convert to fraction form
    18,283.65/25,222.14 = 11,111.67/x
  3. Step 3: Cross multiply
    18,283.65x = 25,222.14 × 11,111.67
  4. Step 4: Simplify right side
    18,283.65x = 280,260,096.37
  5. Step 5: Solve for x
    x = 280,260,096.37/18,283.65
  6. Step 6: Final answer
    x = 15,328.45

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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.