Home / 21,004.96-28,996.24-13,058.08

Finding the Fourth Proportional to 21,004.96, 28,996.24 and 13,058.08

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Solution

The fourth proportional to 21,004.96, 28,996.24 and 13,058.08 is: 18,025.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.96 : 28,996.24 = 13,058.08 : x
  2. Step 2: Convert to fraction form
    21,004.96/28,996.24 = 13,058.08/x
  3. Step 3: Cross multiply
    21,004.96x = 28,996.24 × 13,058.08
  4. Step 4: Simplify right side
    21,004.96x = 378,635,221.62
  5. Step 5: Solve for x
    x = 378,635,221.62/21,004.96
  6. Step 6: Final answer
    x = 18,025.99

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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.