Home / 14,518.08-21,729.12-12,490.56

Finding the Fourth Proportional to 14,518.08, 21,729.12 and 12,490.56

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Solution

The fourth proportional to 14,518.08, 21,729.12 and 12,490.56 is: 18,694.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,518.08 : 21,729.12 = 12,490.56 : x
  2. Step 2: Convert to fraction form
    14,518.08/21,729.12 = 12,490.56/x
  3. Step 3: Cross multiply
    14,518.08x = 21,729.12 × 12,490.56
  4. Step 4: Simplify right side
    14,518.08x = 271,408,877.11
  5. Step 5: Solve for x
    x = 271,408,877.11/14,518.08
  6. Step 6: Final answer
    x = 18,694.54

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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.