Home / 21,631.14-29,853.06-13,131.29

Finding the Fourth Proportional to 21,631.14, 29,853.06 and 13,131.29

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Solution

The fourth proportional to 21,631.14, 29,853.06 and 13,131.29 is: 18,122.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,631.14 : 29,853.06 = 13,131.29 : x
  2. Step 2: Convert to fraction form
    21,631.14/29,853.06 = 13,131.29/x
  3. Step 3: Cross multiply
    21,631.14x = 29,853.06 × 13,131.29
  4. Step 4: Simplify right side
    21,631.14x = 392,009,188.25
  5. Step 5: Solve for x
    x = 392,009,188.25/21,631.14
  6. Step 6: Final answer
    x = 18,122.45

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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.