Home / 21,526.90-29,709.89-12,097.28

Finding the Fourth Proportional to 21,526.90, 29,709.89 and 12,097.28

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Solution

The fourth proportional to 21,526.90, 29,709.89 and 12,097.28 is: 16,695.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,526.90 : 29,709.89 = 12,097.28 : x
  2. Step 2: Convert to fraction form
    21,526.90/29,709.89 = 12,097.28/x
  3. Step 3: Cross multiply
    21,526.90x = 29,709.89 × 12,097.28
  4. Step 4: Simplify right side
    21,526.90x = 359,408,917.25
  5. Step 5: Solve for x
    x = 359,408,917.25/21,526.90
  6. Step 6: Final answer
    x = 16,695.81

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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.