Home / 39,856.92-59,784.74-13,579.96

Finding the Fourth Proportional to 39,856.92, 59,784.74 and 13,579.96

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Solution

The fourth proportional to 39,856.92, 59,784.74 and 13,579.96 is: 20,369.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,856.92 : 59,784.74 = 13,579.96 : x
  2. Step 2: Convert to fraction form
    39,856.92/59,784.74 = 13,579.96/x
  3. Step 3: Cross multiply
    39,856.92x = 59,784.74 × 13,579.96
  4. Step 4: Simplify right side
    39,856.92x = 811,874,377.81
  5. Step 5: Solve for x
    x = 811,874,377.81/39,856.92
  6. Step 6: Final answer
    x = 20,369.72

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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.