Home / 21,526.34-29,706.64-13,028.36

Finding the Fourth Proportional to 21,526.34, 29,706.64 and 13,028.36

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Solution

The fourth proportional to 21,526.34, 29,706.64 and 13,028.36 is: 17,979.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,526.34 : 29,706.64 = 13,028.36 : x
  2. Step 2: Convert to fraction form
    21,526.34/29,706.64 = 13,028.36/x
  3. Step 3: Cross multiply
    21,526.34x = 29,706.64 × 13,028.36
  4. Step 4: Simplify right side
    21,526.34x = 387,028,800.31
  5. Step 5: Solve for x
    x = 387,028,800.31/21,526.34
  6. Step 6: Final answer
    x = 17,979.31

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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.