Home / 12,210.60-18,319.34-3,445.59

Finding the Fourth Proportional to 12,210.60, 18,319.34 and 3,445.59

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Solution

The fourth proportional to 12,210.60, 18,319.34 and 3,445.59 is: 5,169.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.60 : 18,319.34 = 3,445.59 : x
  2. Step 2: Convert to fraction form
    12,210.60/18,319.34 = 3,445.59/x
  3. Step 3: Cross multiply
    12,210.60x = 18,319.34 × 3,445.59
  4. Step 4: Simplify right side
    12,210.60x = 63,120,917.48
  5. Step 5: Solve for x
    x = 63,120,917.48/12,210.60
  6. Step 6: Final answer
    x = 5,169.35

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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.