Home / 20,842.68-31,251.77-8,368.62

Finding the Fourth Proportional to 20,842.68, 31,251.77 and 8,368.62

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Solution

The fourth proportional to 20,842.68, 31,251.77 and 8,368.62 is: 12,548.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,842.68 : 31,251.77 = 8,368.62 : x
  2. Step 2: Convert to fraction form
    20,842.68/31,251.77 = 8,368.62/x
  3. Step 3: Cross multiply
    20,842.68x = 31,251.77 × 8,368.62
  4. Step 4: Simplify right side
    20,842.68x = 261,534,187.46
  5. Step 5: Solve for x
    x = 261,534,187.46/20,842.68
  6. Step 6: Final answer
    x = 12,548.01

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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.