Home / 28,107.54-38,788.74-15,360.66

Finding the Fourth Proportional to 28,107.54, 38,788.74 and 15,360.66

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Solution

The fourth proportional to 28,107.54, 38,788.74 and 15,360.66 is: 21,197.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107.54 : 38,788.74 = 15,360.66 : x
  2. Step 2: Convert to fraction form
    28,107.54/38,788.74 = 15,360.66/x
  3. Step 3: Cross multiply
    28,107.54x = 38,788.74 × 15,360.66
  4. Step 4: Simplify right side
    28,107.54x = 595,820,646.97
  5. Step 5: Solve for x
    x = 595,820,646.97/28,107.54
  6. Step 6: Final answer
    x = 21,197.89

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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.