Home / 21,170.30-31,762.06-12,746.04

Finding the Fourth Proportional to 21,170.30, 31,762.06 and 12,746.04

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Solution

The fourth proportional to 21,170.30, 31,762.06 and 12,746.04 is: 19,123.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,170.30 : 31,762.06 = 12,746.04 : x
  2. Step 2: Convert to fraction form
    21,170.30/31,762.06 = 12,746.04/x
  3. Step 3: Cross multiply
    21,170.30x = 31,762.06 × 12,746.04
  4. Step 4: Simplify right side
    21,170.30x = 404,840,487.24
  5. Step 5: Solve for x
    x = 404,840,487.24/21,170.30
  6. Step 6: Final answer
    x = 19,123.04

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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.