Home / 12,128.73-18,193.09-4,335.99

Finding the Fourth Proportional to 12,128.73, 18,193.09 and 4,335.99

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Solution

The fourth proportional to 12,128.73, 18,193.09 and 4,335.99 is: 6,503.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.73 : 18,193.09 = 4,335.99 : x
  2. Step 2: Convert to fraction form
    12,128.73/18,193.09 = 4,335.99/x
  3. Step 3: Cross multiply
    12,128.73x = 18,193.09 × 4,335.99
  4. Step 4: Simplify right side
    12,128.73x = 78,885,056.31
  5. Step 5: Solve for x
    x = 78,885,056.31/12,128.73
  6. Step 6: Final answer
    x = 6,503.98

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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.