Home / 15,619.55-21,555.48-8,545.97

Finding the Fourth Proportional to 15,619.55, 21,555.48 and 8,545.97

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Solution

The fourth proportional to 15,619.55, 21,555.48 and 8,545.97 is: 11,793.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,619.55 : 21,555.48 = 8,545.97 : x
  2. Step 2: Convert to fraction form
    15,619.55/21,555.48 = 8,545.97/x
  3. Step 3: Cross multiply
    15,619.55x = 21,555.48 × 8,545.97
  4. Step 4: Simplify right side
    15,619.55x = 184,212,377.64
  5. Step 5: Solve for x
    x = 184,212,377.64/15,619.55
  6. Step 6: Final answer
    x = 11,793.71

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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.