Home / 31,281.19-46,923.78-12,558.75

Finding the Fourth Proportional to 31,281.19, 46,923.78 and 12,558.75

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Solution

The fourth proportional to 31,281.19, 46,923.78 and 12,558.75 is: 18,838.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,281.19 : 46,923.78 = 12,558.75 : x
  2. Step 2: Convert to fraction form
    31,281.19/46,923.78 = 12,558.75/x
  3. Step 3: Cross multiply
    31,281.19x = 46,923.78 × 12,558.75
  4. Step 4: Simplify right side
    31,281.19x = 589,303,857.88
  5. Step 5: Solve for x
    x = 589,303,857.88/31,281.19
  6. Step 6: Final answer
    x = 18,838.92

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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.