Home / 18,945.93-26,142.35-10,986.60

Finding the Fourth Proportional to 18,945.93, 26,142.35 and 10,986.60

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Solution

The fourth proportional to 18,945.93, 26,142.35 and 10,986.60 is: 15,159.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.93 : 26,142.35 = 10,986.60 : x
  2. Step 2: Convert to fraction form
    18,945.93/26,142.35 = 10,986.60/x
  3. Step 3: Cross multiply
    18,945.93x = 26,142.35 × 10,986.60
  4. Step 4: Simplify right side
    18,945.93x = 287,215,487.58
  5. Step 5: Solve for x
    x = 287,215,487.58/18,945.93
  6. Step 6: Final answer
    x = 15,159.75

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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.