Home / 13,831.36-19,087.34-7,864.28

Finding the Fourth Proportional to 13,831.36, 19,087.34 and 7,864.28

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Solution

The fourth proportional to 13,831.36, 19,087.34 and 7,864.28 is: 10,852.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.36 : 19,087.34 = 7,864.28 : x
  2. Step 2: Convert to fraction form
    13,831.36/19,087.34 = 7,864.28/x
  3. Step 3: Cross multiply
    13,831.36x = 19,087.34 × 7,864.28
  4. Step 4: Simplify right side
    13,831.36x = 150,108,186.22
  5. Step 5: Solve for x
    x = 150,108,186.22/13,831.36
  6. Step 6: Final answer
    x = 10,852.74

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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.