Home / 12,280.60-18,417.53-3,393.81

Finding the Fourth Proportional to 12,280.60, 18,417.53 and 3,393.81

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Solution

The fourth proportional to 12,280.60, 18,417.53 and 3,393.81 is: 5,089.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.60 : 18,417.53 = 3,393.81 : x
  2. Step 2: Convert to fraction form
    12,280.60/18,417.53 = 3,393.81/x
  3. Step 3: Cross multiply
    12,280.60x = 18,417.53 × 3,393.81
  4. Step 4: Simplify right side
    12,280.60x = 62,505,597.49
  5. Step 5: Solve for x
    x = 62,505,597.49/12,280.60
  6. Step 6: Final answer
    x = 5,089.78

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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.