Home / 14,117.44-21,135.12-12,237.72

Finding the Fourth Proportional to 14,117.44, 21,135.12 and 12,237.72

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Solution

The fourth proportional to 14,117.44, 21,135.12 and 12,237.72 is: 18,321.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,117.44 : 21,135.12 = 12,237.72 : x
  2. Step 2: Convert to fraction form
    14,117.44/21,135.12 = 12,237.72/x
  3. Step 3: Cross multiply
    14,117.44x = 21,135.12 × 12,237.72
  4. Step 4: Simplify right side
    14,117.44x = 258,645,680.73
  5. Step 5: Solve for x
    x = 258,645,680.73/14,117.44
  6. Step 6: Final answer
    x = 18,321.00

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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.