Home / 21,608.04-29,821.05-12,658.62

Finding the Fourth Proportional to 21,608.04, 29,821.05 and 12,658.62

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Solution

The fourth proportional to 21,608.04, 29,821.05 and 12,658.62 is: 17,470.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,608.04 : 29,821.05 = 12,658.62 : x
  2. Step 2: Convert to fraction form
    21,608.04/29,821.05 = 12,658.62/x
  3. Step 3: Cross multiply
    21,608.04x = 29,821.05 × 12,658.62
  4. Step 4: Simplify right side
    21,608.04x = 377,493,339.95
  5. Step 5: Solve for x
    x = 377,493,339.95/21,608.04
  6. Step 6: Final answer
    x = 17,470.04

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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.