Home / 15,545.58-21,451.86-9,171.84

Finding the Fourth Proportional to 15,545.58, 21,451.86 and 9,171.84

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Solution

The fourth proportional to 15,545.58, 21,451.86 and 9,171.84 is: 12,656.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,545.58 : 21,451.86 = 9,171.84 : x
  2. Step 2: Convert to fraction form
    15,545.58/21,451.86 = 9,171.84/x
  3. Step 3: Cross multiply
    15,545.58x = 21,451.86 × 9,171.84
  4. Step 4: Simplify right side
    15,545.58x = 196,753,027.62
  5. Step 5: Solve for x
    x = 196,753,027.62/15,545.58
  6. Step 6: Final answer
    x = 12,656.53

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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.