Home / 31,293.21-46,939.81-20,783.75

Finding the Fourth Proportional to 31,293.21, 46,939.81 and 20,783.75

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Solution

The fourth proportional to 31,293.21, 46,939.81 and 20,783.75 is: 31,175.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,293.21 : 46,939.81 = 20,783.75 : x
  2. Step 2: Convert to fraction form
    31,293.21/46,939.81 = 20,783.75/x
  3. Step 3: Cross multiply
    31,293.21x = 46,939.81 × 20,783.75
  4. Step 4: Simplify right side
    31,293.21x = 975,585,276.09
  5. Step 5: Solve for x
    x = 975,585,276.09/31,293.21
  6. Step 6: Final answer
    x = 31,175.62

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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.