Home / 19,831.13-27,365.53-11,870.45

Finding the Fourth Proportional to 19,831.13, 27,365.53 and 11,870.45

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Solution

The fourth proportional to 19,831.13, 27,365.53 and 11,870.45 is: 16,380.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,831.13 : 27,365.53 = 11,870.45 : x
  2. Step 2: Convert to fraction form
    19,831.13/27,365.53 = 11,870.45/x
  3. Step 3: Cross multiply
    19,831.13x = 27,365.53 × 11,870.45
  4. Step 4: Simplify right side
    19,831.13x = 324,840,959.41
  5. Step 5: Solve for x
    x = 324,840,959.41/19,831.13
  6. Step 6: Final answer
    x = 16,380.36

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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.