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Finding the Fourth Proportional to 46,660.50, 69,990.75 and 13,828.50

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Solution

The fourth proportional to 46,660.50, 69,990.75 and 13,828.50 is: 20,742.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,660.50 : 69,990.75 = 13,828.50 : x
  2. Step 2: Convert to fraction form
    46,660.50/69,990.75 = 13,828.50/x
  3. Step 3: Cross multiply
    46,660.50x = 69,990.75 × 13,828.50
  4. Step 4: Simplify right side
    46,660.50x = 967,867,086.38
  5. Step 5: Solve for x
    x = 967,867,086.38/46,660.50
  6. Step 6: Final answer
    x = 20,742.75

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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.