Home / 18,938.56-26,131.01-10,871.72

Finding the Fourth Proportional to 18,938.56, 26,131.01 and 10,871.72

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Solution

The fourth proportional to 18,938.56, 26,131.01 and 10,871.72 is: 15,000.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.56 : 26,131.01 = 10,871.72 : x
  2. Step 2: Convert to fraction form
    18,938.56/26,131.01 = 10,871.72/x
  3. Step 3: Cross multiply
    18,938.56x = 26,131.01 × 10,871.72
  4. Step 4: Simplify right side
    18,938.56x = 284,089,035.01
  5. Step 5: Solve for x
    x = 284,089,035.01/18,938.56
  6. Step 6: Final answer
    x = 15,000.56

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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.