Home / 19,640.47-29,402.81-12,964.65

Finding the Fourth Proportional to 19,640.47, 29,402.81 and 12,964.65

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Solution

The fourth proportional to 19,640.47, 29,402.81 and 12,964.65 is: 19,408.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,640.47 : 29,402.81 = 12,964.65 : x
  2. Step 2: Convert to fraction form
    19,640.47/29,402.81 = 12,964.65/x
  3. Step 3: Cross multiply
    19,640.47x = 29,402.81 × 12,964.65
  4. Step 4: Simplify right side
    19,640.47x = 381,196,993.65
  5. Step 5: Solve for x
    x = 381,196,993.65/19,640.47
  6. Step 6: Final answer
    x = 19,408.76

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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.