Home / 20,861.84-31,289.02-5,865.37

Finding the Fourth Proportional to 20,861.84, 31,289.02 and 5,865.37

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Solution

The fourth proportional to 20,861.84, 31,289.02 and 5,865.37 is: 8,797.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,861.84 : 31,289.02 = 5,865.37 : x
  2. Step 2: Convert to fraction form
    20,861.84/31,289.02 = 5,865.37/x
  3. Step 3: Cross multiply
    20,861.84x = 31,289.02 × 5,865.37
  4. Step 4: Simplify right side
    20,861.84x = 183,521,537.46
  5. Step 5: Solve for x
    x = 183,521,537.46/20,861.84
  6. Step 6: Final answer
    x = 8,797.00

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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.