Home / 15,380.07-21,226.06-9,415.68

Finding the Fourth Proportional to 15,380.07, 21,226.06 and 9,415.68

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Solution

The fourth proportional to 15,380.07, 21,226.06 and 9,415.68 is: 12,994.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,380.07 : 21,226.06 = 9,415.68 : x
  2. Step 2: Convert to fraction form
    15,380.07/21,226.06 = 9,415.68/x
  3. Step 3: Cross multiply
    15,380.07x = 21,226.06 × 9,415.68
  4. Step 4: Simplify right side
    15,380.07x = 199,857,788.62
  5. Step 5: Solve for x
    x = 199,857,788.62/15,380.07
  6. Step 6: Final answer
    x = 12,994.60

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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.