Home / 21,208.70-29,265.90-11,776.28

Finding the Fourth Proportional to 21,208.70, 29,265.90 and 11,776.28

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Solution

The fourth proportional to 21,208.70, 29,265.90 and 11,776.28 is: 16,250.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.70 : 29,265.90 = 11,776.28 : x
  2. Step 2: Convert to fraction form
    21,208.70/29,265.90 = 11,776.28/x
  3. Step 3: Cross multiply
    21,208.70x = 29,265.90 × 11,776.28
  4. Step 4: Simplify right side
    21,208.70x = 344,643,432.85
  5. Step 5: Solve for x
    x = 344,643,432.85/21,208.70
  6. Step 6: Final answer
    x = 16,250.10

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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.