Home / 21,273.36-29,355.98-12,320.22

Finding the Fourth Proportional to 21,273.36, 29,355.98 and 12,320.22

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Solution

The fourth proportional to 21,273.36, 29,355.98 and 12,320.22 is: 17,001.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,273.36 : 29,355.98 = 12,320.22 : x
  2. Step 2: Convert to fraction form
    21,273.36/29,355.98 = 12,320.22/x
  3. Step 3: Cross multiply
    21,273.36x = 29,355.98 × 12,320.22
  4. Step 4: Simplify right side
    21,273.36x = 361,672,131.92
  5. Step 5: Solve for x
    x = 361,672,131.92/21,273.36
  6. Step 6: Final answer
    x = 17,001.18

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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.