Home / 21,141.04-29,180.64-12,758.08

Finding the Fourth Proportional to 21,141.04, 29,180.64 and 12,758.08

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Solution

The fourth proportional to 21,141.04, 29,180.64 and 12,758.08 is: 17,609.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.04 : 29,180.64 = 12,758.08 : x
  2. Step 2: Convert to fraction form
    21,141.04/29,180.64 = 12,758.08/x
  3. Step 3: Cross multiply
    21,141.04x = 29,180.64 × 12,758.08
  4. Step 4: Simplify right side
    21,141.04x = 372,288,939.57
  5. Step 5: Solve for x
    x = 372,288,939.57/21,141.04
  6. Step 6: Final answer
    x = 17,609.77

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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.