Home / 30,398.64-45,586.92-12,869.68

Finding the Fourth Proportional to 30,398.64, 45,586.92 and 12,869.68

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Solution

The fourth proportional to 30,398.64, 45,586.92 and 12,869.68 is: 19,299.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,398.64 : 45,586.92 = 12,869.68 : x
  2. Step 2: Convert to fraction form
    30,398.64/45,586.92 = 12,869.68/x
  3. Step 3: Cross multiply
    30,398.64x = 45,586.92 × 12,869.68
  4. Step 4: Simplify right side
    30,398.64x = 586,689,072.59
  5. Step 5: Solve for x
    x = 586,689,072.59/30,398.64
  6. Step 6: Final answer
    x = 19,299.85

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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.