Home / 15,361.11-21,198.60-8,988.21

Finding the Fourth Proportional to 15,361.11, 21,198.60 and 8,988.21

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Solution

The fourth proportional to 15,361.11, 21,198.60 and 8,988.21 is: 12,403.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,361.11 : 21,198.60 = 8,988.21 : x
  2. Step 2: Convert to fraction form
    15,361.11/21,198.60 = 8,988.21/x
  3. Step 3: Cross multiply
    15,361.11x = 21,198.60 × 8,988.21
  4. Step 4: Simplify right side
    15,361.11x = 190,537,468.51
  5. Step 5: Solve for x
    x = 190,537,468.51/15,361.11
  6. Step 6: Final answer
    x = 12,403.89

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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.