Home / 19,664.10-29,511-13,409.28

Finding the Fourth Proportional to 19,664.10, 29,511 and 13,409.28

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Solution

The fourth proportional to 19,664.10, 29,511 and 13,409.28 is: 20,124.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,664.10 : 29,511 = 13,409.28 : x
  2. Step 2: Convert to fraction form
    19,664.10/29,511 = 13,409.28/x
  3. Step 3: Cross multiply
    19,664.10x = 29,511 × 13,409.28
  4. Step 4: Simplify right side
    19,664.10x = 395,721,262.08
  5. Step 5: Solve for x
    x = 395,721,262.08/19,664.10
  6. Step 6: Final answer
    x = 20,124.05

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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.