Home / 21,108.76-29,126.64-11,675.52

Finding the Fourth Proportional to 21,108.76, 29,126.64 and 11,675.52

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Solution

The fourth proportional to 21,108.76, 29,126.64 and 11,675.52 is: 16,110.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,108.76 : 29,126.64 = 11,675.52 : x
  2. Step 2: Convert to fraction form
    21,108.76/29,126.64 = 11,675.52/x
  3. Step 3: Cross multiply
    21,108.76x = 29,126.64 × 11,675.52
  4. Step 4: Simplify right side
    21,108.76x = 340,068,667.85
  5. Step 5: Solve for x
    x = 340,068,667.85/21,108.76
  6. Step 6: Final answer
    x = 16,110.31

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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.