Home / 30,576.30-45,864.45-21,245.10

Finding the Fourth Proportional to 30,576.30, 45,864.45 and 21,245.10

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Solution

The fourth proportional to 30,576.30, 45,864.45 and 21,245.10 is: 31,867.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,576.30 : 45,864.45 = 21,245.10 : x
  2. Step 2: Convert to fraction form
    30,576.30/45,864.45 = 21,245.10/x
  3. Step 3: Cross multiply
    30,576.30x = 45,864.45 × 21,245.10
  4. Step 4: Simplify right side
    30,576.30x = 974,394,826.70
  5. Step 5: Solve for x
    x = 974,394,826.70/30,576.30
  6. Step 6: Final answer
    x = 31,867.65

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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.