Home / 20,835.90-28,755.54-14,135.58

Finding the Fourth Proportional to 20,835.90, 28,755.54 and 14,135.58

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Solution

The fourth proportional to 20,835.90, 28,755.54 and 14,135.58 is: 19,508.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.90 : 28,755.54 = 14,135.58 : x
  2. Step 2: Convert to fraction form
    20,835.90/28,755.54 = 14,135.58/x
  3. Step 3: Cross multiply
    20,835.90x = 28,755.54 × 14,135.58
  4. Step 4: Simplify right side
    20,835.90x = 406,476,236.11
  5. Step 5: Solve for x
    x = 406,476,236.11/20,835.90
  6. Step 6: Final answer
    x = 19,508.46

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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.