Home / 28,003.92-38,637.16-16,667.71

Finding the Fourth Proportional to 28,003.92, 38,637.16 and 16,667.71

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Solution

The fourth proportional to 28,003.92, 38,637.16 and 16,667.71 is: 22,996.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003.92 : 38,637.16 = 16,667.71 : x
  2. Step 2: Convert to fraction form
    28,003.92/38,637.16 = 16,667.71/x
  3. Step 3: Cross multiply
    28,003.92x = 38,637.16 × 16,667.71
  4. Step 4: Simplify right side
    28,003.92x = 643,992,978.10
  5. Step 5: Solve for x
    x = 643,992,978.10/28,003.92
  6. Step 6: Final answer
    x = 22,996.53

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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.