Home / 38,690.15-58,027.01-12,387.83

Finding the Fourth Proportional to 38,690.15, 58,027.01 and 12,387.83

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Solution

The fourth proportional to 38,690.15, 58,027.01 and 12,387.83 is: 18,579.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,690.15 : 58,027.01 = 12,387.83 : x
  2. Step 2: Convert to fraction form
    38,690.15/58,027.01 = 12,387.83/x
  3. Step 3: Cross multiply
    38,690.15x = 58,027.01 × 12,387.83
  4. Step 4: Simplify right side
    38,690.15x = 718,828,383.21
  5. Step 5: Solve for x
    x = 718,828,383.21/38,690.15
  6. Step 6: Final answer
    x = 18,579.11

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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.