Home / 38,935.68-58,410.72-12,638.40

Finding the Fourth Proportional to 38,935.68, 58,410.72 and 12,638.40

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Solution

The fourth proportional to 38,935.68, 58,410.72 and 12,638.40 is: 18,959.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,935.68 : 58,410.72 = 12,638.40 : x
  2. Step 2: Convert to fraction form
    38,935.68/58,410.72 = 12,638.40/x
  3. Step 3: Cross multiply
    38,935.68x = 58,410.72 × 12,638.40
  4. Step 4: Simplify right side
    38,935.68x = 738,218,043.65
  5. Step 5: Solve for x
    x = 738,218,043.65/38,935.68
  6. Step 6: Final answer
    x = 18,959.94

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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.