Home / 38,961.51-58,429.85-12,659.91

Finding the Fourth Proportional to 38,961.51, 58,429.85 and 12,659.91

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Solution

The fourth proportional to 38,961.51, 58,429.85 and 12,659.91 is: 18,985.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,961.51 : 58,429.85 = 12,659.91 : x
  2. Step 2: Convert to fraction form
    38,961.51/58,429.85 = 12,659.91/x
  3. Step 3: Cross multiply
    38,961.51x = 58,429.85 × 12,659.91
  4. Step 4: Simplify right side
    38,961.51x = 739,716,579.01
  5. Step 5: Solve for x
    x = 739,716,579.01/38,961.51
  6. Step 6: Final answer
    x = 18,985.83

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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.