Home / 18,945.81-26,146.13-11,392.56

Finding the Fourth Proportional to 18,945.81, 26,146.13 and 11,392.56

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Solution

The fourth proportional to 18,945.81, 26,146.13 and 11,392.56 is: 15,722.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.81 : 26,146.13 = 11,392.56 : x
  2. Step 2: Convert to fraction form
    18,945.81/26,146.13 = 11,392.56/x
  3. Step 3: Cross multiply
    18,945.81x = 26,146.13 × 11,392.56
  4. Step 4: Simplify right side
    18,945.81x = 297,871,297.83
  5. Step 5: Solve for x
    x = 297,871,297.83/18,945.81
  6. Step 6: Final answer
    x = 15,722.28

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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.