Home / 28,611.90-39,470.49-16,670.88

Finding the Fourth Proportional to 28,611.90, 39,470.49 and 16,670.88

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Solution

The fourth proportional to 28,611.90, 39,470.49 and 16,670.88 is: 22,997.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,611.90 : 39,470.49 = 16,670.88 : x
  2. Step 2: Convert to fraction form
    28,611.90/39,470.49 = 16,670.88/x
  3. Step 3: Cross multiply
    28,611.90x = 39,470.49 × 16,670.88
  4. Step 4: Simplify right side
    28,611.90x = 658,007,802.33
  5. Step 5: Solve for x
    x = 658,007,802.33/28,611.90
  6. Step 6: Final answer
    x = 22,997.70

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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.