Home / 21,046.50-31,524.80-13,628.93

Finding the Fourth Proportional to 21,046.50, 31,524.80 and 13,628.93

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Solution

The fourth proportional to 21,046.50, 31,524.80 and 13,628.93 is: 20,414.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,046.50 : 31,524.80 = 13,628.93 : x
  2. Step 2: Convert to fraction form
    21,046.50/31,524.80 = 13,628.93/x
  3. Step 3: Cross multiply
    21,046.50x = 31,524.80 × 13,628.93
  4. Step 4: Simplify right side
    21,046.50x = 429,649,066.70
  5. Step 5: Solve for x
    x = 429,649,066.70/21,046.50
  6. Step 6: Final answer
    x = 20,414.28

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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.