Home / 21,703.44-29,950.32-12,749.28

Finding the Fourth Proportional to 21,703.44, 29,950.32 and 12,749.28

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Solution

The fourth proportional to 21,703.44, 29,950.32 and 12,749.28 is: 17,593.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,703.44 : 29,950.32 = 12,749.28 : x
  2. Step 2: Convert to fraction form
    21,703.44/29,950.32 = 12,749.28/x
  3. Step 3: Cross multiply
    21,703.44x = 29,950.32 × 12,749.28
  4. Step 4: Simplify right side
    21,703.44x = 381,845,015.77
  5. Step 5: Solve for x
    x = 381,845,015.77/21,703.44
  6. Step 6: Final answer
    x = 17,593.76

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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.