Home / 30,299.37-45,440.85-12,765.09

Finding the Fourth Proportional to 30,299.37, 45,440.85 and 12,765.09

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Solution

The fourth proportional to 30,299.37, 45,440.85 and 12,765.09 is: 19,144.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,299.37 : 45,440.85 = 12,765.09 : x
  2. Step 2: Convert to fraction form
    30,299.37/45,440.85 = 12,765.09/x
  3. Step 3: Cross multiply
    30,299.37x = 45,440.85 × 12,765.09
  4. Step 4: Simplify right side
    30,299.37x = 580,056,686.40
  5. Step 5: Solve for x
    x = 580,056,686.40/30,299.37
  6. Step 6: Final answer
    x = 19,144.19

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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.