Home / 14,217.56-21,340.76-12,821.39

Finding the Fourth Proportional to 14,217.56, 21,340.76 and 12,821.39

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Solution

The fourth proportional to 14,217.56, 21,340.76 and 12,821.39 is: 19,245.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,217.56 : 21,340.76 = 12,821.39 : x
  2. Step 2: Convert to fraction form
    14,217.56/21,340.76 = 12,821.39/x
  3. Step 3: Cross multiply
    14,217.56x = 21,340.76 × 12,821.39
  4. Step 4: Simplify right side
    14,217.56x = 273,618,036.05
  5. Step 5: Solve for x
    x = 273,618,036.05/14,217.56
  6. Step 6: Final answer
    x = 19,245.08

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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.