Home / 39,899.78-59,831.27-11,809.79

Finding the Fourth Proportional to 39,899.78, 59,831.27 and 11,809.79

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Solution

The fourth proportional to 39,899.78, 59,831.27 and 11,809.79 is: 17,709.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,899.78 : 59,831.27 = 11,809.79 : x
  2. Step 2: Convert to fraction form
    39,899.78/59,831.27 = 11,809.79/x
  3. Step 3: Cross multiply
    39,899.78x = 59,831.27 × 11,809.79
  4. Step 4: Simplify right side
    39,899.78x = 706,594,734.13
  5. Step 5: Solve for x
    x = 706,594,734.13/39,899.78
  6. Step 6: Final answer
    x = 17,709.24

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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.