Home / 12,831.48-19,253.34-6,987.96

Finding the Fourth Proportional to 12,831.48, 19,253.34 and 6,987.96

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Solution

The fourth proportional to 12,831.48, 19,253.34 and 6,987.96 is: 10,485.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,831.48 : 19,253.34 = 6,987.96 : x
  2. Step 2: Convert to fraction form
    12,831.48/19,253.34 = 6,987.96/x
  3. Step 3: Cross multiply
    12,831.48x = 19,253.34 × 6,987.96
  4. Step 4: Simplify right side
    12,831.48x = 134,541,569.79
  5. Step 5: Solve for x
    x = 134,541,569.79/12,831.48
  6. Step 6: Final answer
    x = 10,485.27

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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.