Home / 31,106.64-46,679.32-12,638.64

Finding the Fourth Proportional to 31,106.64, 46,679.32 and 12,638.64

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Solution

The fourth proportional to 31,106.64, 46,679.32 and 12,638.64 is: 18,965.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,106.64 : 46,679.32 = 12,638.64 : x
  2. Step 2: Convert to fraction form
    31,106.64/46,679.32 = 12,638.64/x
  3. Step 3: Cross multiply
    31,106.64x = 46,679.32 × 12,638.64
  4. Step 4: Simplify right side
    31,106.64x = 589,963,174.43
  5. Step 5: Solve for x
    x = 589,963,174.43/31,106.64
  6. Step 6: Final answer
    x = 18,965.83

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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.