Home / 21,341.50-29,452.06-11,911.88

Finding the Fourth Proportional to 21,341.50, 29,452.06 and 11,911.88

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Solution

The fourth proportional to 21,341.50, 29,452.06 and 11,911.88 is: 16,438.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341.50 : 29,452.06 = 11,911.88 : x
  2. Step 2: Convert to fraction form
    21,341.50/29,452.06 = 11,911.88/x
  3. Step 3: Cross multiply
    21,341.50x = 29,452.06 × 11,911.88
  4. Step 4: Simplify right side
    21,341.50x = 350,829,404.47
  5. Step 5: Solve for x
    x = 350,829,404.47/21,341.50
  6. Step 6: Final answer
    x = 16,438.84

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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.