Home / 14,117.20-21,175.80-12,586.30

Finding the Fourth Proportional to 14,117.20, 21,175.80 and 12,586.30

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Solution

The fourth proportional to 14,117.20, 21,175.80 and 12,586.30 is: 18,879.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,117.20 : 21,175.80 = 12,586.30 : x
  2. Step 2: Convert to fraction form
    14,117.20/21,175.80 = 12,586.30/x
  3. Step 3: Cross multiply
    14,117.20x = 21,175.80 × 12,586.30
  4. Step 4: Simplify right side
    14,117.20x = 266,524,971.54
  5. Step 5: Solve for x
    x = 266,524,971.54/14,117.20
  6. Step 6: Final answer
    x = 18,879.45

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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.