Home / 28,239.80-38,966.88-16,906.58

Finding the Fourth Proportional to 28,239.80, 38,966.88 and 16,906.58

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Solution

The fourth proportional to 28,239.80, 38,966.88 and 16,906.58 is: 23,328.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239.80 : 38,966.88 = 16,906.58 : x
  2. Step 2: Convert to fraction form
    28,239.80/38,966.88 = 16,906.58/x
  3. Step 3: Cross multiply
    28,239.80x = 38,966.88 × 16,906.58
  4. Step 4: Simplify right side
    28,239.80x = 658,796,688.76
  5. Step 5: Solve for x
    x = 658,796,688.76/28,239.80
  6. Step 6: Final answer
    x = 23,328.66

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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.