Home / 13,511.21-18,636.08-12,395.84

Finding the Fourth Proportional to 13,511.21, 18,636.08 and 12,395.84

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Solution

The fourth proportional to 13,511.21, 18,636.08 and 12,395.84 is: 17,097.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,511.21 : 18,636.08 = 12,395.84 : x
  2. Step 2: Convert to fraction form
    13,511.21/18,636.08 = 12,395.84/x
  3. Step 3: Cross multiply
    13,511.21x = 18,636.08 × 12,395.84
  4. Step 4: Simplify right side
    13,511.21x = 231,009,710.75
  5. Step 5: Solve for x
    x = 231,009,710.75/13,511.21
  6. Step 6: Final answer
    x = 17,097.64

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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.