Home / 18,645.81-25,725.42-10,686.48

Finding the Fourth Proportional to 18,645.81, 25,725.42 and 10,686.48

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Solution

The fourth proportional to 18,645.81, 25,725.42 and 10,686.48 is: 14,744.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.81 : 25,725.42 = 10,686.48 : x
  2. Step 2: Convert to fraction form
    18,645.81/25,725.42 = 10,686.48/x
  3. Step 3: Cross multiply
    18,645.81x = 25,725.42 × 10,686.48
  4. Step 4: Simplify right side
    18,645.81x = 274,914,186.32
  5. Step 5: Solve for x
    x = 274,914,186.32/18,645.81
  6. Step 6: Final answer
    x = 14,744.02

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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.