Home / 21,690.68-29,936.33-13,733.64

Finding the Fourth Proportional to 21,690.68, 29,936.33 and 13,733.64

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Solution

The fourth proportional to 21,690.68, 29,936.33 and 13,733.64 is: 18,954.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,690.68 : 29,936.33 = 13,733.64 : x
  2. Step 2: Convert to fraction form
    21,690.68/29,936.33 = 13,733.64/x
  3. Step 3: Cross multiply
    21,690.68x = 29,936.33 × 13,733.64
  4. Step 4: Simplify right side
    21,690.68x = 411,134,710.47
  5. Step 5: Solve for x
    x = 411,134,710.47/21,690.68
  6. Step 6: Final answer
    x = 18,954.45

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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.