Home / 18,570.78-27,831.53-13,617.23

Finding the Fourth Proportional to 18,570.78, 27,831.53 and 13,617.23

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Solution

The fourth proportional to 18,570.78, 27,831.53 and 13,617.23 is: 20,407.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,570.78 : 27,831.53 = 13,617.23 : x
  2. Step 2: Convert to fraction form
    18,570.78/27,831.53 = 13,617.23/x
  3. Step 3: Cross multiply
    18,570.78x = 27,831.53 × 13,617.23
  4. Step 4: Simplify right side
    18,570.78x = 378,988,240.15
  5. Step 5: Solve for x
    x = 378,988,240.15/18,570.78
  6. Step 6: Final answer
    x = 20,407.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.