Home / 28,003.55-38,642.13-16,669.62

Finding the Fourth Proportional to 28,003.55, 38,642.13 and 16,669.62

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Solution

The fourth proportional to 28,003.55, 38,642.13 and 16,669.62 is: 23,002.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003.55 : 38,642.13 = 16,669.62 : x
  2. Step 2: Convert to fraction form
    28,003.55/38,642.13 = 16,669.62/x
  3. Step 3: Cross multiply
    28,003.55x = 38,642.13 × 16,669.62
  4. Step 4: Simplify right side
    28,003.55x = 644,149,623.09
  5. Step 5: Solve for x
    x = 644,149,623.09/28,003.55
  6. Step 6: Final answer
    x = 23,002.43

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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.