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Finding the Fourth Proportional to 13,395.84, 20,075.04 and 11,411.12

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Solution

The fourth proportional to 13,395.84, 20,075.04 and 11,411.12 is: 17,100.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.84 : 20,075.04 = 11,411.12 : x
  2. Step 2: Convert to fraction form
    13,395.84/20,075.04 = 11,411.12/x
  3. Step 3: Cross multiply
    13,395.84x = 20,075.04 × 11,411.12
  4. Step 4: Simplify right side
    13,395.84x = 229,078,690.44
  5. Step 5: Solve for x
    x = 229,078,690.44/13,395.84
  6. Step 6: Final answer
    x = 17,100.73

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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.