Home / 15,847.72-21,870.19-8,677.94

Finding the Fourth Proportional to 15,847.72, 21,870.19 and 8,677.94

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Solution

The fourth proportional to 15,847.72, 21,870.19 and 8,677.94 is: 11,975.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,847.72 : 21,870.19 = 8,677.94 : x
  2. Step 2: Convert to fraction form
    15,847.72/21,870.19 = 8,677.94/x
  3. Step 3: Cross multiply
    15,847.72x = 21,870.19 × 8,677.94
  4. Step 4: Simplify right side
    15,847.72x = 189,788,049.29
  5. Step 5: Solve for x
    x = 189,788,049.29/15,847.72
  6. Step 6: Final answer
    x = 11,975.73

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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.