Home / 20,914.35-28,862.31-11,354.63

Finding the Fourth Proportional to 20,914.35, 28,862.31 and 11,354.63

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Solution

The fourth proportional to 20,914.35, 28,862.31 and 11,354.63 is: 15,669.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.35 : 28,862.31 = 11,354.63 : x
  2. Step 2: Convert to fraction form
    20,914.35/28,862.31 = 11,354.63/x
  3. Step 3: Cross multiply
    20,914.35x = 28,862.31 × 11,354.63
  4. Step 4: Simplify right side
    20,914.35x = 327,720,851.00
  5. Step 5: Solve for x
    x = 327,720,851.00/20,914.35
  6. Step 6: Final answer
    x = 15,669.66

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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.