Home / 20,351.63-28,085.53-13,273.99

Finding the Fourth Proportional to 20,351.63, 28,085.53 and 13,273.99

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Solution

The fourth proportional to 20,351.63, 28,085.53 and 13,273.99 is: 18,318.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.63 : 28,085.53 = 13,273.99 : x
  2. Step 2: Convert to fraction form
    20,351.63/28,085.53 = 13,273.99/x
  3. Step 3: Cross multiply
    20,351.63x = 28,085.53 × 13,273.99
  4. Step 4: Simplify right side
    20,351.63x = 372,807,044.36
  5. Step 5: Solve for x
    x = 372,807,044.36/20,351.63
  6. Step 6: Final answer
    x = 18,318.29

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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.