Home / 11,929.30-16,464.14-7,149.45

Finding the Fourth Proportional to 11,929.30, 16,464.14 and 7,149.45

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Solution

The fourth proportional to 11,929.30, 16,464.14 and 7,149.45 is: 9,867.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,929.30 : 16,464.14 = 7,149.45 : x
  2. Step 2: Convert to fraction form
    11,929.30/16,464.14 = 7,149.45/x
  3. Step 3: Cross multiply
    11,929.30x = 16,464.14 × 7,149.45
  4. Step 4: Simplify right side
    11,929.30x = 117,709,545.72
  5. Step 5: Solve for x
    x = 117,709,545.72/11,929.30
  6. Step 6: Final answer
    x = 9,867.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.