Home / 30,326.40-45,498.48-8,979.68

Finding the Fourth Proportional to 30,326.40, 45,498.48 and 8,979.68

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Solution

The fourth proportional to 30,326.40, 45,498.48 and 8,979.68 is: 13,472.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,326.40 : 45,498.48 = 8,979.68 : x
  2. Step 2: Convert to fraction form
    30,326.40/45,498.48 = 8,979.68/x
  3. Step 3: Cross multiply
    30,326.40x = 45,498.48 × 8,979.68
  4. Step 4: Simplify right side
    30,326.40x = 408,561,790.89
  5. Step 5: Solve for x
    x = 408,561,790.89/30,326.40
  6. Step 6: Final answer
    x = 13,472.15

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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.