Home / 30,470.37-45,711.27-13,831.57

Finding the Fourth Proportional to 30,470.37, 45,711.27 and 13,831.57

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Solution

The fourth proportional to 30,470.37, 45,711.27 and 13,831.57 is: 20,749.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,470.37 : 45,711.27 = 13,831.57 : x
  2. Step 2: Convert to fraction form
    30,470.37/45,711.27 = 13,831.57/x
  3. Step 3: Cross multiply
    30,470.37x = 45,711.27 × 13,831.57
  4. Step 4: Simplify right side
    30,470.37x = 632,258,630.79
  5. Step 5: Solve for x
    x = 632,258,630.79/30,470.37
  6. Step 6: Final answer
    x = 20,749.95

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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.