Home / 21,391.56-32,087.20-5,809.12

Finding the Fourth Proportional to 21,391.56, 32,087.20 and 5,809.12

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Solution

The fourth proportional to 21,391.56, 32,087.20 and 5,809.12 is: 8,713.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,391.56 : 32,087.20 = 5,809.12 : x
  2. Step 2: Convert to fraction form
    21,391.56/32,087.20 = 5,809.12/x
  3. Step 3: Cross multiply
    21,391.56x = 32,087.20 × 5,809.12
  4. Step 4: Simplify right side
    21,391.56x = 186,398,395.26
  5. Step 5: Solve for x
    x = 186,398,395.26/21,391.56
  6. Step 6: Final answer
    x = 8,713.64

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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.