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Finding the Fourth Proportional to 18,751.83, 28,113.81 and 11,354.67

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Solution

The fourth proportional to 18,751.83, 28,113.81 and 11,354.67 is: 17,023.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.83 : 28,113.81 = 11,354.67 : x
  2. Step 2: Convert to fraction form
    18,751.83/28,113.81 = 11,354.67/x
  3. Step 3: Cross multiply
    18,751.83x = 28,113.81 × 11,354.67
  4. Step 4: Simplify right side
    18,751.83x = 319,223,034.99
  5. Step 5: Solve for x
    x = 319,223,034.99/18,751.83
  6. Step 6: Final answer
    x = 17,023.57

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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.