Home / 39,911.40-59,856.30-11,831.40

Finding the Fourth Proportional to 39,911.40, 59,856.30 and 11,831.40

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Solution

The fourth proportional to 39,911.40, 59,856.30 and 11,831.40 is: 17,743.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,911.40 : 59,856.30 = 11,831.40 : x
  2. Step 2: Convert to fraction form
    39,911.40/59,856.30 = 11,831.40/x
  3. Step 3: Cross multiply
    39,911.40x = 59,856.30 × 11,831.40
  4. Step 4: Simplify right side
    39,911.40x = 708,183,827.82
  5. Step 5: Solve for x
    x = 708,183,827.82/39,911.40
  6. Step 6: Final answer
    x = 17,743.90

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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.