Home / 16,920.09-23,354.55-11,885.49

Finding the Fourth Proportional to 16,920.09, 23,354.55 and 11,885.49

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Solution

The fourth proportional to 16,920.09, 23,354.55 and 11,885.49 is: 16,405.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,920.09 : 23,354.55 = 11,885.49 : x
  2. Step 2: Convert to fraction form
    16,920.09/23,354.55 = 11,885.49/x
  3. Step 3: Cross multiply
    16,920.09x = 23,354.55 × 11,885.49
  4. Step 4: Simplify right side
    16,920.09x = 277,580,270.48
  5. Step 5: Solve for x
    x = 277,580,270.48/16,920.09
  6. Step 6: Final answer
    x = 16,405.37

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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.