Home / 31,116.51-46,682.87-8,931.56

Finding the Fourth Proportional to 31,116.51, 46,682.87 and 8,931.56

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Solution

The fourth proportional to 31,116.51, 46,682.87 and 8,931.56 is: 13,399.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,116.51 : 46,682.87 = 8,931.56 : x
  2. Step 2: Convert to fraction form
    31,116.51/46,682.87 = 8,931.56/x
  3. Step 3: Cross multiply
    31,116.51x = 46,682.87 × 8,931.56
  4. Step 4: Simplify right side
    31,116.51x = 416,950,576.31
  5. Step 5: Solve for x
    x = 416,950,576.31/31,116.51
  6. Step 6: Final answer
    x = 13,399.66

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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.