Home / 21,309.48-29,408.40-11,749.32

Finding the Fourth Proportional to 21,309.48, 29,408.40 and 11,749.32

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Solution

The fourth proportional to 21,309.48, 29,408.40 and 11,749.32 is: 16,214.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.48 : 29,408.40 = 11,749.32 : x
  2. Step 2: Convert to fraction form
    21,309.48/29,408.40 = 11,749.32/x
  3. Step 3: Cross multiply
    21,309.48x = 29,408.40 × 11,749.32
  4. Step 4: Simplify right side
    21,309.48x = 345,528,702.29
  5. Step 5: Solve for x
    x = 345,528,702.29/21,309.48
  6. Step 6: Final answer
    x = 16,214.79

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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.