Home / 21,218.13-31,835.40-6,427.19

Finding the Fourth Proportional to 21,218.13, 31,835.40 and 6,427.19

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Solution

The fourth proportional to 21,218.13, 31,835.40 and 6,427.19 is: 9,643.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.13 : 31,835.40 = 6,427.19 : x
  2. Step 2: Convert to fraction form
    21,218.13/31,835.40 = 6,427.19/x
  3. Step 3: Cross multiply
    21,218.13x = 31,835.40 × 6,427.19
  4. Step 4: Simplify right side
    21,218.13x = 204,612,005.35
  5. Step 5: Solve for x
    x = 204,612,005.35/21,218.13
  6. Step 6: Final answer
    x = 9,643.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.