Home / 19,785.78-27,303.27-10,831.50

Finding the Fourth Proportional to 19,785.78, 27,303.27 and 10,831.50

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Solution

The fourth proportional to 19,785.78, 27,303.27 and 10,831.50 is: 14,946.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,785.78 : 27,303.27 = 10,831.50 : x
  2. Step 2: Convert to fraction form
    19,785.78/27,303.27 = 10,831.50/x
  3. Step 3: Cross multiply
    19,785.78x = 27,303.27 × 10,831.50
  4. Step 4: Simplify right side
    19,785.78x = 295,735,369.01
  5. Step 5: Solve for x
    x = 295,735,369.01/19,785.78
  6. Step 6: Final answer
    x = 14,946.86

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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.