Home / 21,537.95-29,721.42-11,977.79

Finding the Fourth Proportional to 21,537.95, 29,721.42 and 11,977.79

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Solution

The fourth proportional to 21,537.95, 29,721.42 and 11,977.79 is: 16,528.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,537.95 : 29,721.42 = 11,977.79 : x
  2. Step 2: Convert to fraction form
    21,537.95/29,721.42 = 11,977.79/x
  3. Step 3: Cross multiply
    21,537.95x = 29,721.42 × 11,977.79
  4. Step 4: Simplify right side
    21,537.95x = 355,996,778.65
  5. Step 5: Solve for x
    x = 355,996,778.65/21,537.95
  6. Step 6: Final answer
    x = 16,528.82

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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.