Home / 39,890.88-59,831.52-21,209.04

Finding the Fourth Proportional to 39,890.88, 59,831.52 and 21,209.04

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Solution

The fourth proportional to 39,890.88, 59,831.52 and 21,209.04 is: 31,811.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,890.88 : 59,831.52 = 21,209.04 : x
  2. Step 2: Convert to fraction form
    39,890.88/59,831.52 = 21,209.04/x
  3. Step 3: Cross multiply
    39,890.88x = 59,831.52 × 21,209.04
  4. Step 4: Simplify right side
    39,890.88x = 1,268,969,100.94
  5. Step 5: Solve for x
    x = 1,268,969,100.94/39,890.88
  6. Step 6: Final answer
    x = 31,811.01

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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.