Home / 13,831.16-19,088.61-7,863.72

Finding the Fourth Proportional to 13,831.16, 19,088.61 and 7,863.72

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Solution

The fourth proportional to 13,831.16, 19,088.61 and 7,863.72 is: 10,852.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.16 : 19,088.61 = 7,863.72 : x
  2. Step 2: Convert to fraction form
    13,831.16/19,088.61 = 7,863.72/x
  3. Step 3: Cross multiply
    13,831.16x = 19,088.61 × 7,863.72
  4. Step 4: Simplify right side
    13,831.16x = 150,107,484.23
  5. Step 5: Solve for x
    x = 150,107,484.23/13,831.16
  6. Step 6: Final answer
    x = 10,852.85

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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.