Home / 31,687.39-47,483.97-13,901.68

Finding the Fourth Proportional to 31,687.39, 47,483.97 and 13,901.68

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Solution

The fourth proportional to 31,687.39, 47,483.97 and 13,901.68 is: 20,831.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687.39 : 47,483.97 = 13,901.68 : x
  2. Step 2: Convert to fraction form
    31,687.39/47,483.97 = 13,901.68/x
  3. Step 3: Cross multiply
    31,687.39x = 47,483.97 × 13,901.68
  4. Step 4: Simplify right side
    31,687.39x = 660,106,956.07
  5. Step 5: Solve for x
    x = 660,106,956.07/31,687.39
  6. Step 6: Final answer
    x = 20,831.85

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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.