Home / 28,091.43-38,768.64-15,518.61

Finding the Fourth Proportional to 28,091.43, 38,768.64 and 15,518.61

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Solution

The fourth proportional to 28,091.43, 38,768.64 and 15,518.61 is: 21,417.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.43 : 38,768.64 = 15,518.61 : x
  2. Step 2: Convert to fraction form
    28,091.43/38,768.64 = 15,518.61/x
  3. Step 3: Cross multiply
    28,091.43x = 38,768.64 × 15,518.61
  4. Step 4: Simplify right side
    28,091.43x = 601,635,404.39
  5. Step 5: Solve for x
    x = 601,635,404.39/28,091.43
  6. Step 6: Final answer
    x = 21,417.04

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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.