Home / 19,939.77-29,916.45-12,535.56

Finding the Fourth Proportional to 19,939.77, 29,916.45 and 12,535.56

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Solution

The fourth proportional to 19,939.77, 29,916.45 and 12,535.56 is: 18,807.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.77 : 29,916.45 = 12,535.56 : x
  2. Step 2: Convert to fraction form
    19,939.77/29,916.45 = 12,535.56/x
  3. Step 3: Cross multiply
    19,939.77x = 29,916.45 × 12,535.56
  4. Step 4: Simplify right side
    19,939.77x = 375,019,453.96
  5. Step 5: Solve for x
    x = 375,019,453.96/19,939.77
  6. Step 6: Final answer
    x = 18,807.61

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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.