Home / 13,678.59-18,850.67-9,895.33

Finding the Fourth Proportional to 13,678.59, 18,850.67 and 9,895.33

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Solution

The fourth proportional to 13,678.59, 18,850.67 and 9,895.33 is: 13,636.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.59 : 18,850.67 = 9,895.33 : x
  2. Step 2: Convert to fraction form
    13,678.59/18,850.67 = 9,895.33/x
  3. Step 3: Cross multiply
    13,678.59x = 18,850.67 × 9,895.33
  4. Step 4: Simplify right side
    13,678.59x = 186,533,506.12
  5. Step 5: Solve for x
    x = 186,533,506.12/13,678.59
  6. Step 6: Final answer
    x = 13,636.90

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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.