Home / 15,990.81-23,965.30-8,586.60

Finding the Fourth Proportional to 15,990.81, 23,965.30 and 8,586.60

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Solution

The fourth proportional to 15,990.81, 23,965.30 and 8,586.60 is: 12,868.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,990.81 : 23,965.30 = 8,586.60 : x
  2. Step 2: Convert to fraction form
    15,990.81/23,965.30 = 8,586.60/x
  3. Step 3: Cross multiply
    15,990.81x = 23,965.30 × 8,586.60
  4. Step 4: Simplify right side
    15,990.81x = 205,780,444.98
  5. Step 5: Solve for x
    x = 205,780,444.98/15,990.81
  6. Step 6: Final answer
    x = 12,868.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.