Home / 15,788.88-21,789.36-9,076.68

Finding the Fourth Proportional to 15,788.88, 21,789.36 and 9,076.68

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Solution

The fourth proportional to 15,788.88, 21,789.36 and 9,076.68 is: 12,526.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,788.88 : 21,789.36 = 9,076.68 : x
  2. Step 2: Convert to fraction form
    15,788.88/21,789.36 = 9,076.68/x
  3. Step 3: Cross multiply
    15,788.88x = 21,789.36 × 9,076.68
  4. Step 4: Simplify right side
    15,788.88x = 197,775,048.12
  5. Step 5: Solve for x
    x = 197,775,048.12/15,788.88
  6. Step 6: Final answer
    x = 12,526.22

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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.