Home / 21,328.39-29,433.10-11,896.94

Finding the Fourth Proportional to 21,328.39, 29,433.10 and 11,896.94

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Solution

The fourth proportional to 21,328.39, 29,433.10 and 11,896.94 is: 16,417.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.39 : 29,433.10 = 11,896.94 : x
  2. Step 2: Convert to fraction form
    21,328.39/29,433.10 = 11,896.94/x
  3. Step 3: Cross multiply
    21,328.39x = 29,433.10 × 11,896.94
  4. Step 4: Simplify right side
    21,328.39x = 350,163,824.71
  5. Step 5: Solve for x
    x = 350,163,824.71/21,328.39
  6. Step 6: Final answer
    x = 16,417.73

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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.