Home / 20,703.15-28,559.84-13,537.28

Finding the Fourth Proportional to 20,703.15, 28,559.84 and 13,537.28

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Solution

The fourth proportional to 20,703.15, 28,559.84 and 13,537.28 is: 18,674.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.15 : 28,559.84 = 13,537.28 : x
  2. Step 2: Convert to fraction form
    20,703.15/28,559.84 = 13,537.28/x
  3. Step 3: Cross multiply
    20,703.15x = 28,559.84 × 13,537.28
  4. Step 4: Simplify right side
    20,703.15x = 386,622,550.84
  5. Step 5: Solve for x
    x = 386,622,550.84/20,703.15
  6. Step 6: Final answer
    x = 18,674.58

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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.