Home / 21,431.36-29,589.36-13,062.08

Finding the Fourth Proportional to 21,431.36, 29,589.36 and 13,062.08

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Solution

The fourth proportional to 21,431.36, 29,589.36 and 13,062.08 is: 18,034.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.36 : 29,589.36 = 13,062.08 : x
  2. Step 2: Convert to fraction form
    21,431.36/29,589.36 = 13,062.08/x
  3. Step 3: Cross multiply
    21,431.36x = 29,589.36 × 13,062.08
  4. Step 4: Simplify right side
    21,431.36x = 386,498,587.47
  5. Step 5: Solve for x
    x = 386,498,587.47/21,431.36
  6. Step 6: Final answer
    x = 18,034.25

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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.