Home / 21,127.76-29,158.33-11,696.32

Finding the Fourth Proportional to 21,127.76, 29,158.33 and 11,696.32

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Solution

The fourth proportional to 21,127.76, 29,158.33 and 11,696.32 is: 16,142.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.76 : 29,158.33 = 11,696.32 : x
  2. Step 2: Convert to fraction form
    21,127.76/29,158.33 = 11,696.32/x
  3. Step 3: Cross multiply
    21,127.76x = 29,158.33 × 11,696.32
  4. Step 4: Simplify right side
    21,127.76x = 341,045,012.55
  5. Step 5: Solve for x
    x = 341,045,012.55/21,127.76
  6. Step 6: Final answer
    x = 16,142.04

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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.