Home / 21,489.98-29,657.96-11,930.76

Finding the Fourth Proportional to 21,489.98, 29,657.96 and 11,930.76

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Solution

The fourth proportional to 21,489.98, 29,657.96 and 11,930.76 is: 16,465.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,489.98 : 29,657.96 = 11,930.76 : x
  2. Step 2: Convert to fraction form
    21,489.98/29,657.96 = 11,930.76/x
  3. Step 3: Cross multiply
    21,489.98x = 29,657.96 × 11,930.76
  4. Step 4: Simplify right side
    21,489.98x = 353,842,002.85
  5. Step 5: Solve for x
    x = 353,842,002.85/21,489.98
  6. Step 6: Final answer
    x = 16,465.44

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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.