Home / 21,092.67-31,623.34-12,770.70

Finding the Fourth Proportional to 21,092.67, 31,623.34 and 12,770.70

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Solution

The fourth proportional to 21,092.67, 31,623.34 and 12,770.70 is: 19,146.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,092.67 : 31,623.34 = 12,770.70 : x
  2. Step 2: Convert to fraction form
    21,092.67/31,623.34 = 12,770.70/x
  3. Step 3: Cross multiply
    21,092.67x = 31,623.34 × 12,770.70
  4. Step 4: Simplify right side
    21,092.67x = 403,852,188.14
  5. Step 5: Solve for x
    x = 403,852,188.14/21,092.67
  6. Step 6: Final answer
    x = 19,146.57

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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.