Home / 30,210.12-41,694.48-21,740.28

Finding the Fourth Proportional to 30,210.12, 41,694.48 and 21,740.28

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Solution

The fourth proportional to 30,210.12, 41,694.48 and 21,740.28 is: 30,004.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,210.12 : 41,694.48 = 21,740.28 : x
  2. Step 2: Convert to fraction form
    30,210.12/41,694.48 = 21,740.28/x
  3. Step 3: Cross multiply
    30,210.12x = 41,694.48 × 21,740.28
  4. Step 4: Simplify right side
    30,210.12x = 906,449,669.65
  5. Step 5: Solve for x
    x = 906,449,669.65/30,210.12
  6. Step 6: Final answer
    x = 30,004.84

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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.