Home / 21,518.61-29,694.33-11,957.91

Finding the Fourth Proportional to 21,518.61, 29,694.33 and 11,957.91

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Solution

The fourth proportional to 21,518.61, 29,694.33 and 11,957.91 is: 16,501.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,518.61 : 29,694.33 = 11,957.91 : x
  2. Step 2: Convert to fraction form
    21,518.61/29,694.33 = 11,957.91/x
  3. Step 3: Cross multiply
    21,518.61x = 29,694.33 × 11,957.91
  4. Step 4: Simplify right side
    21,518.61x = 355,082,125.65
  5. Step 5: Solve for x
    x = 355,082,125.65/21,518.61
  6. Step 6: Final answer
    x = 16,501.16

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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.