Home / 21,580.68-29,781.63-12,633.42

Finding the Fourth Proportional to 21,580.68, 29,781.63 and 12,633.42

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Solution

The fourth proportional to 21,580.68, 29,781.63 and 12,633.42 is: 17,434.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,580.68 : 29,781.63 = 12,633.42 : x
  2. Step 2: Convert to fraction form
    21,580.68/29,781.63 = 12,633.42/x
  3. Step 3: Cross multiply
    21,580.68x = 29,781.63 × 12,633.42
  4. Step 4: Simplify right side
    21,580.68x = 376,243,840.07
  5. Step 5: Solve for x
    x = 376,243,840.07/21,580.68
  6. Step 6: Final answer
    x = 17,434.29

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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.