Home / 28,028.64-38,679.84-15,453.84

Finding the Fourth Proportional to 28,028.64, 38,679.84 and 15,453.84

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Solution

The fourth proportional to 28,028.64, 38,679.84 and 15,453.84 is: 21,326.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.64 : 38,679.84 = 15,453.84 : x
  2. Step 2: Convert to fraction form
    28,028.64/38,679.84 = 15,453.84/x
  3. Step 3: Cross multiply
    28,028.64x = 38,679.84 × 15,453.84
  4. Step 4: Simplify right side
    28,028.64x = 597,752,058.59
  5. Step 5: Solve for x
    x = 597,752,058.59/28,028.64
  6. Step 6: Final answer
    x = 21,326.47

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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.