Home / 21,105.74-29,126.04-11,674.64

Finding the Fourth Proportional to 21,105.74, 29,126.04 and 11,674.64

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Solution

The fourth proportional to 21,105.74, 29,126.04 and 11,674.64 is: 16,111.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,105.74 : 29,126.04 = 11,674.64 : x
  2. Step 2: Convert to fraction form
    21,105.74/29,126.04 = 11,674.64/x
  3. Step 3: Cross multiply
    21,105.74x = 29,126.04 × 11,674.64
  4. Step 4: Simplify right side
    21,105.74x = 340,036,031.63
  5. Step 5: Solve for x
    x = 340,036,031.63/21,105.74
  6. Step 6: Final answer
    x = 16,111.07

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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.