Home / 16,918.74-23,370.21-12,988.44

Finding the Fourth Proportional to 16,918.74, 23,370.21 and 12,988.44

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Solution

The fourth proportional to 16,918.74, 23,370.21 and 12,988.44 is: 17,941.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,918.74 : 23,370.21 = 12,988.44 : x
  2. Step 2: Convert to fraction form
    16,918.74/23,370.21 = 12,988.44/x
  3. Step 3: Cross multiply
    16,918.74x = 23,370.21 × 12,988.44
  4. Step 4: Simplify right side
    16,918.74x = 303,542,570.37
  5. Step 5: Solve for x
    x = 303,542,570.37/16,918.74
  6. Step 6: Final answer
    x = 17,941.20

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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.