Home / 15,272.82-21,072.96-8,985.60

Finding the Fourth Proportional to 15,272.82, 21,072.96 and 8,985.60

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Solution

The fourth proportional to 15,272.82, 21,072.96 and 8,985.60 is: 12,398.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,272.82 : 21,072.96 = 8,985.60 : x
  2. Step 2: Convert to fraction form
    15,272.82/21,072.96 = 8,985.60/x
  3. Step 3: Cross multiply
    15,272.82x = 21,072.96 × 8,985.60
  4. Step 4: Simplify right side
    15,272.82x = 189,353,189.38
  5. Step 5: Solve for x
    x = 189,353,189.38/15,272.82
  6. Step 6: Final answer
    x = 12,398.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.