Home / 20,309.25-28,029.38-13,256.17

Finding the Fourth Proportional to 20,309.25, 28,029.38 and 13,256.17

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Solution

The fourth proportional to 20,309.25, 28,029.38 and 13,256.17 is: 18,295.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.25 : 28,029.38 = 13,256.17 : x
  2. Step 2: Convert to fraction form
    20,309.25/28,029.38 = 13,256.17/x
  3. Step 3: Cross multiply
    20,309.25x = 28,029.38 × 13,256.17
  4. Step 4: Simplify right side
    20,309.25x = 371,562,259.42
  5. Step 5: Solve for x
    x = 371,562,259.42/20,309.25
  6. Step 6: Final answer
    x = 18,295.23

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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.