Home / 30,109.32-45,169.65-12,580.92

Finding the Fourth Proportional to 30,109.32, 45,169.65 and 12,580.92

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Solution

The fourth proportional to 30,109.32, 45,169.65 and 12,580.92 is: 18,873.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,109.32 : 45,169.65 = 12,580.92 : x
  2. Step 2: Convert to fraction form
    30,109.32/45,169.65 = 12,580.92/x
  3. Step 3: Cross multiply
    30,109.32x = 45,169.65 × 12,580.92
  4. Step 4: Simplify right side
    30,109.32x = 568,275,753.08
  5. Step 5: Solve for x
    x = 568,275,753.08/30,109.32
  6. Step 6: Final answer
    x = 18,873.75

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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.