Home / 21,688.26-29,929.80-11,752.26

Finding the Fourth Proportional to 21,688.26, 29,929.80 and 11,752.26

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Solution

The fourth proportional to 21,688.26, 29,929.80 and 11,752.26 is: 16,218.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,688.26 : 29,929.80 = 11,752.26 : x
  2. Step 2: Convert to fraction form
    21,688.26/29,929.80 = 11,752.26/x
  3. Step 3: Cross multiply
    21,688.26x = 29,929.80 × 11,752.26
  4. Step 4: Simplify right side
    21,688.26x = 351,742,791.35
  5. Step 5: Solve for x
    x = 351,742,791.35/21,688.26
  6. Step 6: Final answer
    x = 16,218.12

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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.