Home / 28,043.82-38,700.09-15,297.12

Finding the Fourth Proportional to 28,043.82, 38,700.09 and 15,297.12

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Solution

The fourth proportional to 28,043.82, 38,700.09 and 15,297.12 is: 21,109.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,043.82 : 38,700.09 = 15,297.12 : x
  2. Step 2: Convert to fraction form
    28,043.82/38,700.09 = 15,297.12/x
  3. Step 3: Cross multiply
    28,043.82x = 38,700.09 × 15,297.12
  4. Step 4: Simplify right side
    28,043.82x = 591,999,920.74
  5. Step 5: Solve for x
    x = 591,999,920.74/28,043.82
  6. Step 6: Final answer
    x = 21,109.82

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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.