Home / 30,203.04-41,665.72-21,255.51

Finding the Fourth Proportional to 30,203.04, 41,665.72 and 21,255.51

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Solution

The fourth proportional to 30,203.04, 41,665.72 and 21,255.51 is: 29,322.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,203.04 : 41,665.72 = 21,255.51 : x
  2. Step 2: Convert to fraction form
    30,203.04/41,665.72 = 21,255.51/x
  3. Step 3: Cross multiply
    30,203.04x = 41,665.72 × 21,255.51
  4. Step 4: Simplify right side
    30,203.04x = 885,626,128.12
  5. Step 5: Solve for x
    x = 885,626,128.12/30,203.04
  6. Step 6: Final answer
    x = 29,322.42

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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.