Home / 18,989.43-26,205.98-10,605.75

Finding the Fourth Proportional to 18,989.43, 26,205.98 and 10,605.75

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Solution

The fourth proportional to 18,989.43, 26,205.98 and 10,605.75 is: 14,636.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.43 : 26,205.98 = 10,605.75 : x
  2. Step 2: Convert to fraction form
    18,989.43/26,205.98 = 10,605.75/x
  3. Step 3: Cross multiply
    18,989.43x = 26,205.98 × 10,605.75
  4. Step 4: Simplify right side
    18,989.43x = 277,934,072.39
  5. Step 5: Solve for x
    x = 277,934,072.39/18,989.43
  6. Step 6: Final answer
    x = 14,636.25

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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.