Home / 33,215.96-45,802.86-21,279.80

Finding the Fourth Proportional to 33,215.96, 45,802.86 and 21,279.80

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Solution

The fourth proportional to 33,215.96, 45,802.86 and 21,279.80 is: 29,343.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,215.96 : 45,802.86 = 21,279.80 : x
  2. Step 2: Convert to fraction form
    33,215.96/45,802.86 = 21,279.80/x
  3. Step 3: Cross multiply
    33,215.96x = 45,802.86 × 21,279.80
  4. Step 4: Simplify right side
    33,215.96x = 974,675,700.23
  5. Step 5: Solve for x
    x = 974,675,700.23/33,215.96
  6. Step 6: Final answer
    x = 29,343.60

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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.