Home / 21,161.46-29,136.06-16,109.40

Finding the Fourth Proportional to 21,161.46, 29,136.06 and 16,109.40

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Solution

The fourth proportional to 21,161.46, 29,136.06 and 16,109.40 is: 22,180.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.46 : 29,136.06 = 16,109.40 : x
  2. Step 2: Convert to fraction form
    21,161.46/29,136.06 = 16,109.40/x
  3. Step 3: Cross multiply
    21,161.46x = 29,136.06 × 16,109.40
  4. Step 4: Simplify right side
    21,161.46x = 469,364,444.96
  5. Step 5: Solve for x
    x = 469,364,444.96/21,161.46
  6. Step 6: Final answer
    x = 22,180.15

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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.