Home / 21,159.57-29,196.14-12,207.45

Finding the Fourth Proportional to 21,159.57, 29,196.14 and 12,207.45

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Solution

The fourth proportional to 21,159.57, 29,196.14 and 12,207.45 is: 16,843.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.57 : 29,196.14 = 12,207.45 : x
  2. Step 2: Convert to fraction form
    21,159.57/29,196.14 = 12,207.45/x
  3. Step 3: Cross multiply
    21,159.57x = 29,196.14 × 12,207.45
  4. Step 4: Simplify right side
    21,159.57x = 356,410,358.21
  5. Step 5: Solve for x
    x = 356,410,358.21/21,159.57
  6. Step 6: Final answer
    x = 16,843.93

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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.