Home / 21,538.55-29,723.29-12,106.51

Finding the Fourth Proportional to 21,538.55, 29,723.29 and 12,106.51

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Solution

The fourth proportional to 21,538.55, 29,723.29 and 12,106.51 is: 16,707.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,538.55 : 29,723.29 = 12,106.51 : x
  2. Step 2: Convert to fraction form
    21,538.55/29,723.29 = 12,106.51/x
  3. Step 3: Cross multiply
    21,538.55x = 29,723.29 × 12,106.51
  4. Step 4: Simplify right side
    21,538.55x = 359,845,203.04
  5. Step 5: Solve for x
    x = 359,845,203.04/21,538.55
  6. Step 6: Final answer
    x = 16,707.03

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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.