Home / 20,831.04-28,752.87-11,883.42

Finding the Fourth Proportional to 20,831.04, 28,752.87 and 11,883.42

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Solution

The fourth proportional to 20,831.04, 28,752.87 and 11,883.42 is: 16,402.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.04 : 28,752.87 = 11,883.42 : x
  2. Step 2: Convert to fraction form
    20,831.04/28,752.87 = 11,883.42/x
  3. Step 3: Cross multiply
    20,831.04x = 28,752.87 × 11,883.42
  4. Step 4: Simplify right side
    20,831.04x = 341,682,430.42
  5. Step 5: Solve for x
    x = 341,682,430.42/20,831.04
  6. Step 6: Final answer
    x = 16,402.56

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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.