Home / 18,715.15-25,825.80-10,215.58

Finding the Fourth Proportional to 18,715.15, 25,825.80 and 10,215.58

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Solution

The fourth proportional to 18,715.15, 25,825.80 and 10,215.58 is: 14,096.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715.15 : 25,825.80 = 10,215.58 : x
  2. Step 2: Convert to fraction form
    18,715.15/25,825.80 = 10,215.58/x
  3. Step 3: Cross multiply
    18,715.15x = 25,825.80 × 10,215.58
  4. Step 4: Simplify right side
    18,715.15x = 263,825,525.96
  5. Step 5: Solve for x
    x = 263,825,525.96/18,715.15
  6. Step 6: Final answer
    x = 14,096.90

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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.