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Finding the Fourth Proportional to 28,403.43, 42,604.53 and 7,626.93

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Solution

The fourth proportional to 28,403.43, 42,604.53 and 7,626.93 is: 11,440.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,403.43 : 42,604.53 = 7,626.93 : x
  2. Step 2: Convert to fraction form
    28,403.43/42,604.53 = 7,626.93/x
  3. Step 3: Cross multiply
    28,403.43x = 42,604.53 × 7,626.93
  4. Step 4: Simplify right side
    28,403.43x = 324,941,767.99
  5. Step 5: Solve for x
    x = 324,941,767.99/28,403.43
  6. Step 6: Final answer
    x = 11,440.23

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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.