Home / 21,160.52-29,214.81-13,619.96

Finding the Fourth Proportional to 21,160.52, 29,214.81 and 13,619.96

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Solution

The fourth proportional to 21,160.52, 29,214.81 and 13,619.96 is: 18,804.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.52 : 29,214.81 = 13,619.96 : x
  2. Step 2: Convert to fraction form
    21,160.52/29,214.81 = 13,619.96/x
  3. Step 3: Cross multiply
    21,160.52x = 29,214.81 × 13,619.96
  4. Step 4: Simplify right side
    21,160.52x = 397,904,616.64
  5. Step 5: Solve for x
    x = 397,904,616.64/21,160.52
  6. Step 6: Final answer
    x = 18,804.10

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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.