Home / 20,703.44-28,569.88-11,750.78

Finding the Fourth Proportional to 20,703.44, 28,569.88 and 11,750.78

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Solution

The fourth proportional to 20,703.44, 28,569.88 and 11,750.78 is: 16,215.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.44 : 28,569.88 = 11,750.78 : x
  2. Step 2: Convert to fraction form
    20,703.44/28,569.88 = 11,750.78/x
  3. Step 3: Cross multiply
    20,703.44x = 28,569.88 × 11,750.78
  4. Step 4: Simplify right side
    20,703.44x = 335,718,374.51
  5. Step 5: Solve for x
    x = 335,718,374.51/20,703.44
  6. Step 6: Final answer
    x = 16,215.58

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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.