Home / 12,291.21-18,404.01-6,435.51

Finding the Fourth Proportional to 12,291.21, 18,404.01 and 6,435.51

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Solution

The fourth proportional to 12,291.21, 18,404.01 and 6,435.51 is: 9,636.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291.21 : 18,404.01 = 6,435.51 : x
  2. Step 2: Convert to fraction form
    12,291.21/18,404.01 = 6,435.51/x
  3. Step 3: Cross multiply
    12,291.21x = 18,404.01 × 6,435.51
  4. Step 4: Simplify right side
    12,291.21x = 118,439,190.40
  5. Step 5: Solve for x
    x = 118,439,190.40/12,291.21
  6. Step 6: Final answer
    x = 9,636.09

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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.