Home / 12,831.64-19,255.56-5,040.28

Finding the Fourth Proportional to 12,831.64, 19,255.56 and 5,040.28

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Solution

The fourth proportional to 12,831.64, 19,255.56 and 5,040.28 is: 7,563.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,831.64 : 19,255.56 = 5,040.28 : x
  2. Step 2: Convert to fraction form
    12,831.64/19,255.56 = 5,040.28/x
  3. Step 3: Cross multiply
    12,831.64x = 19,255.56 × 5,040.28
  4. Step 4: Simplify right side
    12,831.64x = 97,053,413.96
  5. Step 5: Solve for x
    x = 97,053,413.96/12,831.64
  6. Step 6: Final answer
    x = 7,563.60

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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.