Home / 31,516.80-43,504.32-28,153.77

Finding the Fourth Proportional to 31,516.80, 43,504.32 and 28,153.77

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Solution

The fourth proportional to 31,516.80, 43,504.32 and 28,153.77 is: 38,862.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,516.80 : 43,504.32 = 28,153.77 : x
  2. Step 2: Convert to fraction form
    31,516.80/43,504.32 = 28,153.77/x
  3. Step 3: Cross multiply
    31,516.80x = 43,504.32 × 28,153.77
  4. Step 4: Simplify right side
    31,516.80x = 1,224,810,619.29
  5. Step 5: Solve for x
    x = 1,224,810,619.29/31,516.80
  6. Step 6: Final answer
    x = 38,862.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.