Home / 28,003.42-38,636.48-16,667.21

Finding the Fourth Proportional to 28,003.42, 38,636.48 and 16,667.21

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Solution

The fourth proportional to 28,003.42, 38,636.48 and 16,667.21 is: 22,995.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003.42 : 38,636.48 = 16,667.21 : x
  2. Step 2: Convert to fraction form
    28,003.42/38,636.48 = 16,667.21/x
  3. Step 3: Cross multiply
    28,003.42x = 38,636.48 × 16,667.21
  4. Step 4: Simplify right side
    28,003.42x = 643,962,242.48
  5. Step 5: Solve for x
    x = 643,962,242.48/28,003.42
  6. Step 6: Final answer
    x = 22,995.85

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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.