Home / 18,645.10-25,730.78-10,147.77

Finding the Fourth Proportional to 18,645.10, 25,730.78 and 10,147.77

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Solution

The fourth proportional to 18,645.10, 25,730.78 and 10,147.77 is: 14,004.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.10 : 25,730.78 = 10,147.77 : x
  2. Step 2: Convert to fraction form
    18,645.10/25,730.78 = 10,147.77/x
  3. Step 3: Cross multiply
    18,645.10x = 25,730.78 × 10,147.77
  4. Step 4: Simplify right side
    18,645.10x = 261,110,037.36
  5. Step 5: Solve for x
    x = 261,110,037.36/18,645.10
  6. Step 6: Final answer
    x = 14,004.22

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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.