Home / 28,204.69-38,921.13-16,880.42

Finding the Fourth Proportional to 28,204.69, 38,921.13 and 16,880.42

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Solution

The fourth proportional to 28,204.69, 38,921.13 and 16,880.42 is: 23,294.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,204.69 : 38,921.13 = 16,880.42 : x
  2. Step 2: Convert to fraction form
    28,204.69/38,921.13 = 16,880.42/x
  3. Step 3: Cross multiply
    28,204.69x = 38,921.13 × 16,880.42
  4. Step 4: Simplify right side
    28,204.69x = 657,005,021.27
  5. Step 5: Solve for x
    x = 657,005,021.27/28,204.69
  6. Step 6: Final answer
    x = 23,294.18

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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.