Home / 18,876.23-28,317.77-7,776.75

Finding the Fourth Proportional to 18,876.23, 28,317.77 and 7,776.75

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Solution

The fourth proportional to 18,876.23, 28,317.77 and 7,776.75 is: 11,666.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,876.23 : 28,317.77 = 7,776.75 : x
  2. Step 2: Convert to fraction form
    18,876.23/28,317.77 = 7,776.75/x
  3. Step 3: Cross multiply
    18,876.23x = 28,317.77 × 7,776.75
  4. Step 4: Simplify right side
    18,876.23x = 220,220,178.96
  5. Step 5: Solve for x
    x = 220,220,178.96/18,876.23
  6. Step 6: Final answer
    x = 11,666.53

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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.