Home / 21,526.44-29,706.87-13,028.76

Finding the Fourth Proportional to 21,526.44, 29,706.87 and 13,028.76

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Solution

The fourth proportional to 21,526.44, 29,706.87 and 13,028.76 is: 17,979.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,526.44 : 29,706.87 = 13,028.76 : x
  2. Step 2: Convert to fraction form
    21,526.44/29,706.87 = 13,028.76/x
  3. Step 3: Cross multiply
    21,526.44x = 29,706.87 × 13,028.76
  4. Step 4: Simplify right side
    21,526.44x = 387,043,679.58
  5. Step 5: Solve for x
    x = 387,043,679.58/21,526.44
  6. Step 6: Final answer
    x = 17,979.92

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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.