Home / 21,328.27-29,433.64-11,896.63

Finding the Fourth Proportional to 21,328.27, 29,433.64 and 11,896.63

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Solution

The fourth proportional to 21,328.27, 29,433.64 and 11,896.63 is: 16,417.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.27 : 29,433.64 = 11,896.63 : x
  2. Step 2: Convert to fraction form
    21,328.27/29,433.64 = 11,896.63/x
  3. Step 3: Cross multiply
    21,328.27x = 29,433.64 × 11,896.63
  4. Step 4: Simplify right side
    21,328.27x = 350,161,124.63
  5. Step 5: Solve for x
    x = 350,161,124.63/21,328.27
  6. Step 6: Final answer
    x = 16,417.70

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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.