Home / 18,776.28-28,180.58-9,776.76

Finding the Fourth Proportional to 18,776.28, 28,180.58 and 9,776.76

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Solution

The fourth proportional to 18,776.28, 28,180.58 and 9,776.76 is: 14,673.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,776.28 : 28,180.58 = 9,776.76 : x
  2. Step 2: Convert to fraction form
    18,776.28/28,180.58 = 9,776.76/x
  3. Step 3: Cross multiply
    18,776.28x = 28,180.58 × 9,776.76
  4. Step 4: Simplify right side
    18,776.28x = 275,514,767.32
  5. Step 5: Solve for x
    x = 275,514,767.32/18,776.28
  6. Step 6: Final answer
    x = 14,673.55

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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.