Home / 21,369.91-29,488.93-11,809.68

Finding the Fourth Proportional to 21,369.91, 29,488.93 and 11,809.68

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Solution

The fourth proportional to 21,369.91, 29,488.93 and 11,809.68 is: 16,296.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,369.91 : 29,488.93 = 11,809.68 : x
  2. Step 2: Convert to fraction form
    21,369.91/29,488.93 = 11,809.68/x
  3. Step 3: Cross multiply
    21,369.91x = 29,488.93 × 11,809.68
  4. Step 4: Simplify right side
    21,369.91x = 348,254,974.33
  5. Step 5: Solve for x
    x = 348,254,974.33/21,369.91
  6. Step 6: Final answer
    x = 16,296.51

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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.