Home / 21,299.99-31,914.66-12,954.76

Finding the Fourth Proportional to 21,299.99, 31,914.66 and 12,954.76

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Solution

The fourth proportional to 21,299.99, 31,914.66 and 12,954.76 is: 19,410.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,299.99 : 31,914.66 = 12,954.76 : x
  2. Step 2: Convert to fraction form
    21,299.99/31,914.66 = 12,954.76/x
  3. Step 3: Cross multiply
    21,299.99x = 31,914.66 × 12,954.76
  4. Step 4: Simplify right side
    21,299.99x = 413,446,746.46
  5. Step 5: Solve for x
    x = 413,446,746.46/21,299.99
  6. Step 6: Final answer
    x = 19,410.66

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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.