Home / 28,204.19-38,921.78-15,628.94

Finding the Fourth Proportional to 28,204.19, 38,921.78 and 15,628.94

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Solution

The fourth proportional to 28,204.19, 38,921.78 and 15,628.94 is: 21,567.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,204.19 : 38,921.78 = 15,628.94 : x
  2. Step 2: Convert to fraction form
    28,204.19/38,921.78 = 15,628.94/x
  3. Step 3: Cross multiply
    28,204.19x = 38,921.78 × 15,628.94
  4. Step 4: Simplify right side
    28,204.19x = 608,306,164.31
  5. Step 5: Solve for x
    x = 608,306,164.31/28,204.19
  6. Step 6: Final answer
    x = 21,567.94

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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.