Home / 28,120.08-38,790.36-18,037.31

Finding the Fourth Proportional to 28,120.08, 38,790.36 and 18,037.31

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Solution

The fourth proportional to 28,120.08, 38,790.36 and 18,037.31 is: 24,881.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.08 : 38,790.36 = 18,037.31 : x
  2. Step 2: Convert to fraction form
    28,120.08/38,790.36 = 18,037.31/x
  3. Step 3: Cross multiply
    28,120.08x = 38,790.36 × 18,037.31
  4. Step 4: Simplify right side
    28,120.08x = 699,673,554.38
  5. Step 5: Solve for x
    x = 699,673,554.38/28,120.08
  6. Step 6: Final answer
    x = 24,881.63

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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.