Home / 28,179.79-38,887.63-15,604.27

Finding the Fourth Proportional to 28,179.79, 38,887.63 and 15,604.27

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Solution

The fourth proportional to 28,179.79, 38,887.63 and 15,604.27 is: 21,533.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.79 : 38,887.63 = 15,604.27 : x
  2. Step 2: Convert to fraction form
    28,179.79/38,887.63 = 15,604.27/x
  3. Step 3: Cross multiply
    28,179.79x = 38,887.63 × 15,604.27
  4. Step 4: Simplify right side
    28,179.79x = 606,813,078.18
  5. Step 5: Solve for x
    x = 606,813,078.18/28,179.79
  6. Step 6: Final answer
    x = 21,533.63

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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.