Home / 21,096.18-29,112.68-12,140.42

Finding the Fourth Proportional to 21,096.18, 29,112.68 and 12,140.42

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Solution

The fourth proportional to 21,096.18, 29,112.68 and 12,140.42 is: 16,753.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,096.18 : 29,112.68 = 12,140.42 : x
  2. Step 2: Convert to fraction form
    21,096.18/29,112.68 = 12,140.42/x
  3. Step 3: Cross multiply
    21,096.18x = 29,112.68 × 12,140.42
  4. Step 4: Simplify right side
    21,096.18x = 353,440,047.31
  5. Step 5: Solve for x
    x = 353,440,047.31/21,096.18
  6. Step 6: Final answer
    x = 16,753.75

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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.