Home / 21,656.19-29,878.77-12,704.07

Finding the Fourth Proportional to 21,656.19, 29,878.77 and 12,704.07

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Solution

The fourth proportional to 21,656.19, 29,878.77 and 12,704.07 is: 17,527.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,656.19 : 29,878.77 = 12,704.07 : x
  2. Step 2: Convert to fraction form
    21,656.19/29,878.77 = 12,704.07/x
  3. Step 3: Cross multiply
    21,656.19x = 29,878.77 × 12,704.07
  4. Step 4: Simplify right side
    21,656.19x = 379,581,985.59
  5. Step 5: Solve for x
    x = 379,581,985.59/21,656.19
  6. Step 6: Final answer
    x = 17,527.64

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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.