Home / 21,159.14-29,183.63-12,660.62

Finding the Fourth Proportional to 21,159.14, 29,183.63 and 12,660.62

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Solution

The fourth proportional to 21,159.14, 29,183.63 and 12,660.62 is: 17,462.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.14 : 29,183.63 = 12,660.62 : x
  2. Step 2: Convert to fraction form
    21,159.14/29,183.63 = 12,660.62/x
  3. Step 3: Cross multiply
    21,159.14x = 29,183.63 × 12,660.62
  4. Step 4: Simplify right side
    21,159.14x = 369,482,640.43
  5. Step 5: Solve for x
    x = 369,482,640.43/21,159.14
  6. Step 6: Final answer
    x = 17,462.09

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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.