Home / 30,320.37-45,486.72-12,790.26

Finding the Fourth Proportional to 30,320.37, 45,486.72 and 12,790.26

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Solution

The fourth proportional to 30,320.37, 45,486.72 and 12,790.26 is: 19,187.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,320.37 : 45,486.72 = 12,790.26 : x
  2. Step 2: Convert to fraction form
    30,320.37/45,486.72 = 12,790.26/x
  3. Step 3: Cross multiply
    30,320.37x = 45,486.72 × 12,790.26
  4. Step 4: Simplify right side
    30,320.37x = 581,786,975.35
  5. Step 5: Solve for x
    x = 581,786,975.35/30,320.37
  6. Step 6: Final answer
    x = 19,187.99

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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.