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Finding the Fourth Proportional to 10,345, 15,519.40 and 3,326.08

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Solution

The fourth proportional to 10,345, 15,519.40 and 3,326.08 is: 4,989.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,345 : 15,519.40 = 3,326.08 : x
  2. Step 2: Convert to fraction form
    10,345/15,519.40 = 3,326.08/x
  3. Step 3: Cross multiply
    10,345x = 15,519.40 × 3,326.08
  4. Step 4: Simplify right side
    10,345x = 51,618,765.95
  5. Step 5: Solve for x
    x = 51,618,765.95/10,345
  6. Step 6: Final answer
    x = 4,989.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.