Home / 12,281.55-18,405.85-11,494.23

Finding the Fourth Proportional to 12,281.55, 18,405.85 and 11,494.23

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Solution

The fourth proportional to 12,281.55, 18,405.85 and 11,494.23 is: 17,225.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.55 : 18,405.85 = 11,494.23 : x
  2. Step 2: Convert to fraction form
    12,281.55/18,405.85 = 11,494.23/x
  3. Step 3: Cross multiply
    12,281.55x = 18,405.85 × 11,494.23
  4. Step 4: Simplify right side
    12,281.55x = 211,561,073.25
  5. Step 5: Solve for x
    x = 211,561,073.25/12,281.55
  6. Step 6: Final answer
    x = 17,225.93

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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.