Home / 12,259.85-18,389.87-3,494.84

Finding the Fourth Proportional to 12,259.85, 18,389.87 and 3,494.84

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Solution

The fourth proportional to 12,259.85, 18,389.87 and 3,494.84 is: 5,242.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,259.85 : 18,389.87 = 3,494.84 : x
  2. Step 2: Convert to fraction form
    12,259.85/18,389.87 = 3,494.84/x
  3. Step 3: Cross multiply
    12,259.85x = 18,389.87 × 3,494.84
  4. Step 4: Simplify right side
    12,259.85x = 64,269,543.85
  5. Step 5: Solve for x
    x = 64,269,543.85/12,259.85
  6. Step 6: Final answer
    x = 5,242.28

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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.