Home / 33,215.07-45,810.87-21,279.51

Finding the Fourth Proportional to 33,215.07, 45,810.87 and 21,279.51

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Solution

The fourth proportional to 33,215.07, 45,810.87 and 21,279.51 is: 29,349.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,215.07 : 45,810.87 = 21,279.51 : x
  2. Step 2: Convert to fraction form
    33,215.07/45,810.87 = 21,279.51/x
  3. Step 3: Cross multiply
    33,215.07x = 45,810.87 × 21,279.51
  4. Step 4: Simplify right side
    33,215.07x = 974,832,866.27
  5. Step 5: Solve for x
    x = 974,832,866.27/33,215.07
  6. Step 6: Final answer
    x = 29,349.11

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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.