Home / 15,320.58-21,138.62-9,350.08

Finding the Fourth Proportional to 15,320.58, 21,138.62 and 9,350.08

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Solution

The fourth proportional to 15,320.58, 21,138.62 and 9,350.08 is: 12,900.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320.58 : 21,138.62 = 9,350.08 : x
  2. Step 2: Convert to fraction form
    15,320.58/21,138.62 = 9,350.08/x
  3. Step 3: Cross multiply
    15,320.58x = 21,138.62 × 9,350.08
  4. Step 4: Simplify right side
    15,320.58x = 197,647,788.09
  5. Step 5: Solve for x
    x = 197,647,788.09/15,320.58
  6. Step 6: Final answer
    x = 12,900.80

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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.