Home / 10,379.88-15,489.47-9,272.34

Finding the Fourth Proportional to 10,379.88, 15,489.47 and 9,272.34

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Solution

The fourth proportional to 10,379.88, 15,489.47 and 9,272.34 is: 13,836.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,379.88 : 15,489.47 = 9,272.34 : x
  2. Step 2: Convert to fraction form
    10,379.88/15,489.47 = 9,272.34/x
  3. Step 3: Cross multiply
    10,379.88x = 15,489.47 × 9,272.34
  4. Step 4: Simplify right side
    10,379.88x = 143,623,655.44
  5. Step 5: Solve for x
    x = 143,623,655.44/10,379.88
  6. Step 6: Final answer
    x = 13,836.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.