Home / 28,204.45-38,920.07-15,455.61

Finding the Fourth Proportional to 28,204.45, 38,920.07 and 15,455.61

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Solution

The fourth proportional to 28,204.45, 38,920.07 and 15,455.61 is: 21,327.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,204.45 : 38,920.07 = 15,455.61 : x
  2. Step 2: Convert to fraction form
    28,204.45/38,920.07 = 15,455.61/x
  3. Step 3: Cross multiply
    28,204.45x = 38,920.07 × 15,455.61
  4. Step 4: Simplify right side
    28,204.45x = 601,533,461.73
  5. Step 5: Solve for x
    x = 601,533,461.73/28,204.45
  6. Step 6: Final answer
    x = 21,327.61

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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.