Home / 12,215.50-18,323.27-4,422.49

Finding the Fourth Proportional to 12,215.50, 18,323.27 and 4,422.49

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Solution

The fourth proportional to 12,215.50, 18,323.27 and 4,422.49 is: 6,633.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.50 : 18,323.27 = 4,422.49 : x
  2. Step 2: Convert to fraction form
    12,215.50/18,323.27 = 4,422.49/x
  3. Step 3: Cross multiply
    12,215.50x = 18,323.27 × 4,422.49
  4. Step 4: Simplify right side
    12,215.50x = 81,034,478.34
  5. Step 5: Solve for x
    x = 81,034,478.34/12,215.50
  6. Step 6: Final answer
    x = 6,633.74

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Half scale
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Double scale
Find fourth proportional to 12,216.50, 18,324.77 and 4,423.49
Similar ratio
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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.