Home / 21,688.25-29,929.83-11,752.25

Finding the Fourth Proportional to 21,688.25, 29,929.83 and 11,752.25

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Solution

The fourth proportional to 21,688.25, 29,929.83 and 11,752.25 is: 16,218.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,688.25 : 29,929.83 = 11,752.25 : x
  2. Step 2: Convert to fraction form
    21,688.25/29,929.83 = 11,752.25/x
  3. Step 3: Cross multiply
    21,688.25x = 29,929.83 × 11,752.25
  4. Step 4: Simplify right side
    21,688.25x = 351,742,844.62
  5. Step 5: Solve for x
    x = 351,742,844.62/21,688.25
  6. Step 6: Final answer
    x = 16,218.13

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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.