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Finding the Fourth Proportional to 28,423.10, 42,634.80 and 7,361.67

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Solution

The fourth proportional to 28,423.10, 42,634.80 and 7,361.67 is: 11,042.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,423.10 : 42,634.80 = 7,361.67 : x
  2. Step 2: Convert to fraction form
    28,423.10/42,634.80 = 7,361.67/x
  3. Step 3: Cross multiply
    28,423.10x = 42,634.80 × 7,361.67
  4. Step 4: Simplify right side
    28,423.10x = 313,863,328.12
  5. Step 5: Solve for x
    x = 313,863,328.12/28,423.10
  6. Step 6: Final answer
    x = 11,042.55

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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.