Home / 21,703.22-29,954.28-12,750.72

Finding the Fourth Proportional to 21,703.22, 29,954.28 and 12,750.72

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Solution

The fourth proportional to 21,703.22, 29,954.28 and 12,750.72 is: 17,598.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,703.22 : 29,954.28 = 12,750.72 : x
  2. Step 2: Convert to fraction form
    21,703.22/29,954.28 = 12,750.72/x
  3. Step 3: Cross multiply
    21,703.22x = 29,954.28 × 12,750.72
  4. Step 4: Simplify right side
    21,703.22x = 381,938,585.09
  5. Step 5: Solve for x
    x = 381,938,585.09/21,703.22
  6. Step 6: Final answer
    x = 17,598.25

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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.