Home / 28,103.79-38,783.10-16,169.46

Finding the Fourth Proportional to 28,103.79, 38,783.10 and 16,169.46

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Solution

The fourth proportional to 28,103.79, 38,783.10 and 16,169.46 is: 22,313.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.79 : 38,783.10 = 16,169.46 : x
  2. Step 2: Convert to fraction form
    28,103.79/38,783.10 = 16,169.46/x
  3. Step 3: Cross multiply
    28,103.79x = 38,783.10 × 16,169.46
  4. Step 4: Simplify right side
    28,103.79x = 627,101,784.13
  5. Step 5: Solve for x
    x = 627,101,784.13/28,103.79
  6. Step 6: Final answer
    x = 22,313.78

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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.