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Finding the Fourth Proportional to 18,674.16, 25,783 and 13,075.44

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Solution

The fourth proportional to 18,674.16, 25,783 and 13,075.44 is: 18,052.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,674.16 : 25,783 = 13,075.44 : x
  2. Step 2: Convert to fraction form
    18,674.16/25,783 = 13,075.44/x
  3. Step 3: Cross multiply
    18,674.16x = 25,783 × 13,075.44
  4. Step 4: Simplify right side
    18,674.16x = 337,124,069.52
  5. Step 5: Solve for x
    x = 337,124,069.52/18,674.16
  6. Step 6: Final answer
    x = 18,052.97

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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.