Home / 12,210.85-18,319.71-3,445.84

Finding the Fourth Proportional to 12,210.85, 18,319.71 and 3,445.84

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Solution

The fourth proportional to 12,210.85, 18,319.71 and 3,445.84 is: 5,169.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.85 : 18,319.71 = 3,445.84 : x
  2. Step 2: Convert to fraction form
    12,210.85/18,319.71 = 3,445.84/x
  3. Step 3: Cross multiply
    12,210.85x = 18,319.71 × 3,445.84
  4. Step 4: Simplify right side
    12,210.85x = 63,126,789.51
  5. Step 5: Solve for x
    x = 63,126,789.51/12,210.85
  6. Step 6: Final answer
    x = 5,169.73

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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.