Home / 12,975.29-19,465.67-4,209.51

Finding the Fourth Proportional to 12,975.29, 19,465.67 and 4,209.51

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Solution

The fourth proportional to 12,975.29, 19,465.67 and 4,209.51 is: 6,315.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,975.29 : 19,465.67 = 4,209.51 : x
  2. Step 2: Convert to fraction form
    12,975.29/19,465.67 = 4,209.51/x
  3. Step 3: Cross multiply
    12,975.29x = 19,465.67 × 4,209.51
  4. Step 4: Simplify right side
    12,975.29x = 81,940,911.47
  5. Step 5: Solve for x
    x = 81,940,911.47/12,975.29
  6. Step 6: Final answer
    x = 6,315.15

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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.