Home / 21,009.32-31,513.88-6,218.34

Finding the Fourth Proportional to 21,009.32, 31,513.88 and 6,218.34

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Solution

The fourth proportional to 21,009.32, 31,513.88 and 6,218.34 is: 9,327.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,009.32 : 31,513.88 = 6,218.34 : x
  2. Step 2: Convert to fraction form
    21,009.32/31,513.88 = 6,218.34/x
  3. Step 3: Cross multiply
    21,009.32x = 31,513.88 × 6,218.34
  4. Step 4: Simplify right side
    21,009.32x = 195,964,020.56
  5. Step 5: Solve for x
    x = 195,964,020.56/21,009.32
  6. Step 6: Final answer
    x = 9,327.48

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1.5x scale

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.