Home / 20,703.49-28,569.37-11,751.18

Finding the Fourth Proportional to 20,703.49, 28,569.37 and 11,751.18

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Solution

The fourth proportional to 20,703.49, 28,569.37 and 11,751.18 is: 16,215.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.49 : 28,569.37 = 11,751.18 : x
  2. Step 2: Convert to fraction form
    20,703.49/28,569.37 = 11,751.18/x
  3. Step 3: Cross multiply
    20,703.49x = 28,569.37 × 11,751.18
  4. Step 4: Simplify right side
    20,703.49x = 335,723,809.36
  5. Step 5: Solve for x
    x = 335,723,809.36/20,703.49
  6. Step 6: Final answer
    x = 16,215.81

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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.