Home / 21,143.03-29,179.85-12,070.62

Finding the Fourth Proportional to 21,143.03, 29,179.85 and 12,070.62

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Solution

The fourth proportional to 21,143.03, 29,179.85 and 12,070.62 is: 16,658.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,143.03 : 29,179.85 = 12,070.62 : x
  2. Step 2: Convert to fraction form
    21,143.03/29,179.85 = 12,070.62/x
  3. Step 3: Cross multiply
    21,143.03x = 29,179.85 × 12,070.62
  4. Step 4: Simplify right side
    21,143.03x = 352,218,820.65
  5. Step 5: Solve for x
    x = 352,218,820.65/21,143.03
  6. Step 6: Final answer
    x = 16,658.87

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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.