Home / 18,733.80-28,078.38-8,725.08

Finding the Fourth Proportional to 18,733.80, 28,078.38 and 8,725.08

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Solution

The fourth proportional to 18,733.80, 28,078.38 and 8,725.08 is: 13,077.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,733.80 : 28,078.38 = 8,725.08 : x
  2. Step 2: Convert to fraction form
    18,733.80/28,078.38 = 8,725.08/x
  3. Step 3: Cross multiply
    18,733.80x = 28,078.38 × 8,725.08
  4. Step 4: Simplify right side
    18,733.80x = 244,986,111.77
  5. Step 5: Solve for x
    x = 244,986,111.77/18,733.80
  6. Step 6: Final answer
    x = 13,077.22

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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.