Home / 21,082.40-29,097.77-13,538.26

Finding the Fourth Proportional to 21,082.40, 29,097.77 and 13,538.26

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Solution

The fourth proportional to 21,082.40, 29,097.77 and 13,538.26 is: 18,685.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082.40 : 29,097.77 = 13,538.26 : x
  2. Step 2: Convert to fraction form
    21,082.40/29,097.77 = 13,538.26/x
  3. Step 3: Cross multiply
    21,082.40x = 29,097.77 × 13,538.26
  4. Step 4: Simplify right side
    21,082.40x = 393,933,140.57
  5. Step 5: Solve for x
    x = 393,933,140.57/21,082.40
  6. Step 6: Final answer
    x = 18,685.41

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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.