Home / 21,126.25-29,154.27-11,696.23

Finding the Fourth Proportional to 21,126.25, 29,154.27 and 11,696.23

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Solution

The fourth proportional to 21,126.25, 29,154.27 and 11,696.23 is: 16,140.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126.25 : 29,154.27 = 11,696.23 : x
  2. Step 2: Convert to fraction form
    21,126.25/29,154.27 = 11,696.23/x
  3. Step 3: Cross multiply
    21,126.25x = 29,154.27 × 11,696.23
  4. Step 4: Simplify right side
    21,126.25x = 340,995,047.40
  5. Step 5: Solve for x
    x = 340,995,047.40/21,126.25
  6. Step 6: Final answer
    x = 16,140.82

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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.