Home / 29,138.78-40,210.52-16,392.21

Finding the Fourth Proportional to 29,138.78, 40,210.52 and 16,392.21

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Solution

The fourth proportional to 29,138.78, 40,210.52 and 16,392.21 is: 22,620.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,138.78 : 40,210.52 = 16,392.21 : x
  2. Step 2: Convert to fraction form
    29,138.78/40,210.52 = 16,392.21/x
  3. Step 3: Cross multiply
    29,138.78x = 40,210.52 × 16,392.21
  4. Step 4: Simplify right side
    29,138.78x = 659,139,206.09
  5. Step 5: Solve for x
    x = 659,139,206.09/29,138.78
  6. Step 6: Final answer
    x = 22,620.69

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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.