Home / 30,306.34-45,332.90-21,299.82

Finding the Fourth Proportional to 30,306.34, 45,332.90 and 21,299.82

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Solution

The fourth proportional to 30,306.34, 45,332.90 and 21,299.82 is: 31,860.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,306.34 : 45,332.90 = 21,299.82 : x
  2. Step 2: Convert to fraction form
    30,306.34/45,332.90 = 21,299.82/x
  3. Step 3: Cross multiply
    30,306.34x = 45,332.90 × 21,299.82
  4. Step 4: Simplify right side
    30,306.34x = 965,582,610.08
  5. Step 5: Solve for x
    x = 965,582,610.08/30,306.34
  6. Step 6: Final answer
    x = 31,860.75

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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.