Home / 28,556.36-42,839.12-9,831.79

Finding the Fourth Proportional to 28,556.36, 42,839.12 and 9,831.79

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Solution

The fourth proportional to 28,556.36, 42,839.12 and 9,831.79 is: 14,749.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,556.36 : 42,839.12 = 9,831.79 : x
  2. Step 2: Convert to fraction form
    28,556.36/42,839.12 = 9,831.79/x
  3. Step 3: Cross multiply
    28,556.36x = 42,839.12 × 9,831.79
  4. Step 4: Simplify right side
    28,556.36x = 421,185,149.11
  5. Step 5: Solve for x
    x = 421,185,149.11/28,556.36
  6. Step 6: Final answer
    x = 14,749.26

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1.5x scale

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.