Home / 15,360.96-21,199.41-8,555.88

Finding the Fourth Proportional to 15,360.96, 21,199.41 and 8,555.88

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Solution

The fourth proportional to 15,360.96, 21,199.41 and 8,555.88 is: 11,807.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,360.96 : 21,199.41 = 8,555.88 : x
  2. Step 2: Convert to fraction form
    15,360.96/21,199.41 = 8,555.88/x
  3. Step 3: Cross multiply
    15,360.96x = 21,199.41 × 8,555.88
  4. Step 4: Simplify right side
    15,360.96x = 181,379,608.03
  5. Step 5: Solve for x
    x = 181,379,608.03/15,360.96
  6. Step 6: Final answer
    x = 11,807.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.