Home / 19,638.42-29,440.20-7,156.14

Finding the Fourth Proportional to 19,638.42, 29,440.20 and 7,156.14

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Solution

The fourth proportional to 19,638.42, 29,440.20 and 7,156.14 is: 10,727.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,638.42 : 29,440.20 = 7,156.14 : x
  2. Step 2: Convert to fraction form
    19,638.42/29,440.20 = 7,156.14/x
  3. Step 3: Cross multiply
    19,638.42x = 29,440.20 × 7,156.14
  4. Step 4: Simplify right side
    19,638.42x = 210,678,192.83
  5. Step 5: Solve for x
    x = 210,678,192.83/19,638.42
  6. Step 6: Final answer
    x = 10,727.86

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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.