Home / 19,831.55-27,368.81-13,105.38

Finding the Fourth Proportional to 19,831.55, 27,368.81 and 13,105.38

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Solution

The fourth proportional to 19,831.55, 27,368.81 and 13,105.38 is: 18,086.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,831.55 : 27,368.81 = 13,105.38 : x
  2. Step 2: Convert to fraction form
    19,831.55/27,368.81 = 13,105.38/x
  3. Step 3: Cross multiply
    19,831.55x = 27,368.81 × 13,105.38
  4. Step 4: Simplify right side
    19,831.55x = 358,678,589.67
  5. Step 5: Solve for x
    x = 358,678,589.67/19,831.55
  6. Step 6: Final answer
    x = 18,086.27

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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.