Home / 20,788.25-31,161.61-7,457.63

Finding the Fourth Proportional to 20,788.25, 31,161.61 and 7,457.63

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Solution

The fourth proportional to 20,788.25, 31,161.61 and 7,457.63 is: 11,179.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.25 : 31,161.61 = 7,457.63 : x
  2. Step 2: Convert to fraction form
    20,788.25/31,161.61 = 7,457.63/x
  3. Step 3: Cross multiply
    20,788.25x = 31,161.61 × 7,457.63
  4. Step 4: Simplify right side
    20,788.25x = 232,391,757.58
  5. Step 5: Solve for x
    x = 232,391,757.58/20,788.25
  6. Step 6: Final answer
    x = 11,179.00

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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.