Home / 21,370.89-32,028.59-8,705.88

Finding the Fourth Proportional to 21,370.89, 32,028.59 and 8,705.88

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Solution

The fourth proportional to 21,370.89, 32,028.59 and 8,705.88 is: 13,047.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,370.89 : 32,028.59 = 8,705.88 : x
  2. Step 2: Convert to fraction form
    21,370.89/32,028.59 = 8,705.88/x
  3. Step 3: Cross multiply
    21,370.89x = 32,028.59 × 8,705.88
  4. Step 4: Simplify right side
    21,370.89x = 278,837,017.58
  5. Step 5: Solve for x
    x = 278,837,017.58/21,370.89
  6. Step 6: Final answer
    x = 13,047.52

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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.