Home / 15,489.05-21,374.93-8,775.92

Finding the Fourth Proportional to 15,489.05, 21,374.93 and 8,775.92

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Solution

The fourth proportional to 15,489.05, 21,374.93 and 8,775.92 is: 12,110.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,489.05 : 21,374.93 = 8,775.92 : x
  2. Step 2: Convert to fraction form
    15,489.05/21,374.93 = 8,775.92/x
  3. Step 3: Cross multiply
    15,489.05x = 21,374.93 × 8,775.92
  4. Step 4: Simplify right side
    15,489.05x = 187,584,524.93
  5. Step 5: Solve for x
    x = 187,584,524.93/15,489.05
  6. Step 6: Final answer
    x = 12,110.79

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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.