Home / 31,185.72-46,785.87-21,329.64

Finding the Fourth Proportional to 31,185.72, 46,785.87 and 21,329.64

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Solution

The fourth proportional to 31,185.72, 46,785.87 and 21,329.64 is: 31,999.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,185.72 : 46,785.87 = 21,329.64 : x
  2. Step 2: Convert to fraction form
    31,185.72/46,785.87 = 21,329.64/x
  3. Step 3: Cross multiply
    31,185.72x = 46,785.87 × 21,329.64
  4. Step 4: Simplify right side
    31,185.72x = 997,925,764.19
  5. Step 5: Solve for x
    x = 997,925,764.19/31,185.72
  6. Step 6: Final answer
    x = 31,999.45

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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.