Home / 18,831.52-28,247.10-11,438.02

Finding the Fourth Proportional to 18,831.52, 28,247.10 and 11,438.02

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Solution

The fourth proportional to 18,831.52, 28,247.10 and 11,438.02 is: 17,156.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.52 : 28,247.10 = 11,438.02 : x
  2. Step 2: Convert to fraction form
    18,831.52/28,247.10 = 11,438.02/x
  3. Step 3: Cross multiply
    18,831.52x = 28,247.10 × 11,438.02
  4. Step 4: Simplify right side
    18,831.52x = 323,090,894.74
  5. Step 5: Solve for x
    x = 323,090,894.74/18,831.52
  6. Step 6: Final answer
    x = 17,156.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.