Home / 21,616.39-29,835.26-13,653.55

Finding the Fourth Proportional to 21,616.39, 29,835.26 and 13,653.55

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Solution

The fourth proportional to 21,616.39, 29,835.26 and 13,653.55 is: 18,844.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,616.39 : 29,835.26 = 13,653.55 : x
  2. Step 2: Convert to fraction form
    21,616.39/29,835.26 = 13,653.55/x
  3. Step 3: Cross multiply
    21,616.39x = 29,835.26 × 13,653.55
  4. Step 4: Simplify right side
    21,616.39x = 407,357,145.91
  5. Step 5: Solve for x
    x = 407,357,145.91/21,616.39
  6. Step 6: Final answer
    x = 18,844.83

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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.