Home / 29,078.52-40,150.68-21,139.72

Finding the Fourth Proportional to 29,078.52, 40,150.68 and 21,139.72

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Solution

The fourth proportional to 29,078.52, 40,150.68 and 21,139.72 is: 29,189.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,078.52 : 40,150.68 = 21,139.72 : x
  2. Step 2: Convert to fraction form
    29,078.52/40,150.68 = 21,139.72/x
  3. Step 3: Cross multiply
    29,078.52x = 40,150.68 × 21,139.72
  4. Step 4: Simplify right side
    29,078.52x = 848,774,133.01
  5. Step 5: Solve for x
    x = 848,774,133.01/29,078.52
  6. Step 6: Final answer
    x = 29,189.04

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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.