Home / 13,540.14-18,690.84-11,644.05

Finding the Fourth Proportional to 13,540.14, 18,690.84 and 11,644.05

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Solution

The fourth proportional to 13,540.14, 18,690.84 and 11,644.05 is: 16,073.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.14 : 18,690.84 = 11,644.05 : x
  2. Step 2: Convert to fraction form
    13,540.14/18,690.84 = 11,644.05/x
  3. Step 3: Cross multiply
    13,540.14x = 18,690.84 × 11,644.05
  4. Step 4: Simplify right side
    13,540.14x = 217,637,075.50
  5. Step 5: Solve for x
    x = 217,637,075.50/13,540.14
  6. Step 6: Final answer
    x = 16,073.47

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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.