Home / 21,622.77-29,842.29-12,673.80

Finding the Fourth Proportional to 21,622.77, 29,842.29 and 12,673.80

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Solution

The fourth proportional to 21,622.77, 29,842.29 and 12,673.80 is: 17,491.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,622.77 : 29,842.29 = 12,673.80 : x
  2. Step 2: Convert to fraction form
    21,622.77/29,842.29 = 12,673.80/x
  3. Step 3: Cross multiply
    21,622.77x = 29,842.29 × 12,673.80
  4. Step 4: Simplify right side
    21,622.77x = 378,215,215.00
  5. Step 5: Solve for x
    x = 378,215,215.00/21,622.77
  6. Step 6: Final answer
    x = 17,491.52

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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.