Home / 21,389.25-32,055.57-15,485.88

Finding the Fourth Proportional to 21,389.25, 32,055.57 and 15,485.88

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Solution

The fourth proportional to 21,389.25, 32,055.57 and 15,485.88 is: 23,208.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,389.25 : 32,055.57 = 15,485.88 : x
  2. Step 2: Convert to fraction form
    21,389.25/32,055.57 = 15,485.88/x
  3. Step 3: Cross multiply
    21,389.25x = 32,055.57 × 15,485.88
  4. Step 4: Simplify right side
    21,389.25x = 496,408,710.35
  5. Step 5: Solve for x
    x = 496,408,710.35/21,389.25
  6. Step 6: Final answer
    x = 23,208.33

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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.