Home / 21,072.24-31,586.40-8,586.84

Finding the Fourth Proportional to 21,072.24, 31,586.40 and 8,586.84

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Solution

The fourth proportional to 21,072.24, 31,586.40 and 8,586.84 is: 12,871.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.24 : 31,586.40 = 8,586.84 : x
  2. Step 2: Convert to fraction form
    21,072.24/31,586.40 = 8,586.84/x
  3. Step 3: Cross multiply
    21,072.24x = 31,586.40 × 8,586.84
  4. Step 4: Simplify right side
    21,072.24x = 271,227,362.98
  5. Step 5: Solve for x
    x = 271,227,362.98/21,072.24
  6. Step 6: Final answer
    x = 12,871.31

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1.5x scale

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.