Home / 20,892.12-31,333.26-9,788.22

Finding the Fourth Proportional to 20,892.12, 31,333.26 and 9,788.22

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Solution

The fourth proportional to 20,892.12, 31,333.26 and 9,788.22 is: 14,680.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,892.12 : 31,333.26 = 9,788.22 : x
  2. Step 2: Convert to fraction form
    20,892.12/31,333.26 = 9,788.22/x
  3. Step 3: Cross multiply
    20,892.12x = 31,333.26 × 9,788.22
  4. Step 4: Simplify right side
    20,892.12x = 306,696,842.20
  5. Step 5: Solve for x
    x = 306,696,842.20/20,892.12
  6. Step 6: Final answer
    x = 14,680.02

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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.