Home / 21,309.56-29,400.66-12,355.26

Finding the Fourth Proportional to 21,309.56, 29,400.66 and 12,355.26

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Solution

The fourth proportional to 21,309.56, 29,400.66 and 12,355.26 is: 17,046.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.56 : 29,400.66 = 12,355.26 : x
  2. Step 2: Convert to fraction form
    21,309.56/29,400.66 = 12,355.26/x
  3. Step 3: Cross multiply
    21,309.56x = 29,400.66 × 12,355.26
  4. Step 4: Simplify right side
    21,309.56x = 363,252,798.47
  5. Step 5: Solve for x
    x = 363,252,798.47/21,309.56
  6. Step 6: Final answer
    x = 17,046.48

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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.