Home / 12,300.40-18,450.64-5,725.68

Finding the Fourth Proportional to 12,300.40, 18,450.64 and 5,725.68

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Solution

The fourth proportional to 12,300.40, 18,450.64 and 5,725.68 is: 8,588.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,300.40 : 18,450.64 = 5,725.68 : x
  2. Step 2: Convert to fraction form
    12,300.40/18,450.64 = 5,725.68/x
  3. Step 3: Cross multiply
    12,300.40x = 18,450.64 × 5,725.68
  4. Step 4: Simplify right side
    12,300.40x = 105,642,460.44
  5. Step 5: Solve for x
    x = 105,642,460.44/12,300.40
  6. Step 6: Final answer
    x = 8,588.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.