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Finding the Fourth Proportional to 15,603.87, 23,400.94 and 5,213.19

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Solution

The fourth proportional to 15,603.87, 23,400.94 and 5,213.19 is: 7,818.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,603.87 : 23,400.94 = 5,213.19 : x
  2. Step 2: Convert to fraction form
    15,603.87/23,400.94 = 5,213.19/x
  3. Step 3: Cross multiply
    15,603.87x = 23,400.94 × 5,213.19
  4. Step 4: Simplify right side
    15,603.87x = 121,993,520.33
  5. Step 5: Solve for x
    x = 121,993,520.33/15,603.87
  6. Step 6: Final answer
    x = 7,818.16

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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.