Home / 21,106.36-29,126.28-11,674.72

Finding the Fourth Proportional to 21,106.36, 29,126.28 and 11,674.72

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Solution

The fourth proportional to 21,106.36, 29,126.28 and 11,674.72 is: 16,110.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106.36 : 29,126.28 = 11,674.72 : x
  2. Step 2: Convert to fraction form
    21,106.36/29,126.28 = 11,674.72/x
  3. Step 3: Cross multiply
    21,106.36x = 29,126.28 × 11,674.72
  4. Step 4: Simplify right side
    21,106.36x = 340,041,163.64
  5. Step 5: Solve for x
    x = 340,041,163.64/21,106.36
  6. Step 6: Final answer
    x = 16,110.84

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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.