Home / 18,645.51-25,730.32-10,147.80

Finding the Fourth Proportional to 18,645.51, 25,730.32 and 10,147.80

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Solution

The fourth proportional to 18,645.51, 25,730.32 and 10,147.80 is: 14,003.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.51 : 25,730.32 = 10,147.80 : x
  2. Step 2: Convert to fraction form
    18,645.51/25,730.32 = 10,147.80/x
  3. Step 3: Cross multiply
    18,645.51x = 25,730.32 × 10,147.80
  4. Step 4: Simplify right side
    18,645.51x = 261,106,141.30
  5. Step 5: Solve for x
    x = 261,106,141.30/18,645.51
  6. Step 6: Final answer
    x = 14,003.70

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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.