Home / 39,831.75-59,747.63-12,129.75

Finding the Fourth Proportional to 39,831.75, 59,747.63 and 12,129.75

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Solution

The fourth proportional to 39,831.75, 59,747.63 and 12,129.75 is: 18,194.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,831.75 : 59,747.63 = 12,129.75 : x
  2. Step 2: Convert to fraction form
    39,831.75/59,747.63 = 12,129.75/x
  3. Step 3: Cross multiply
    39,831.75x = 59,747.63 × 12,129.75
  4. Step 4: Simplify right side
    39,831.75x = 724,723,754.34
  5. Step 5: Solve for x
    x = 724,723,754.34/39,831.75
  6. Step 6: Final answer
    x = 18,194.63

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Similar ratio
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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.