Home / 21,379.64-29,503.33-11,688.73

Finding the Fourth Proportional to 21,379.64, 29,503.33 and 11,688.73

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Solution

The fourth proportional to 21,379.64, 29,503.33 and 11,688.73 is: 16,130.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.64 : 29,503.33 = 11,688.73 : x
  2. Step 2: Convert to fraction form
    21,379.64/29,503.33 = 11,688.73/x
  3. Step 3: Cross multiply
    21,379.64x = 29,503.33 × 11,688.73
  4. Step 4: Simplify right side
    21,379.64x = 344,856,458.47
  5. Step 5: Solve for x
    x = 344,856,458.47/21,379.64
  6. Step 6: Final answer
    x = 16,130.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.