Home / 30,420.36-41,980.27-16,992.18

Finding the Fourth Proportional to 30,420.36, 41,980.27 and 16,992.18

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Solution

The fourth proportional to 30,420.36, 41,980.27 and 16,992.18 is: 23,449.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,420.36 : 41,980.27 = 16,992.18 : x
  2. Step 2: Convert to fraction form
    30,420.36/41,980.27 = 16,992.18/x
  3. Step 3: Cross multiply
    30,420.36x = 41,980.27 × 16,992.18
  4. Step 4: Simplify right side
    30,420.36x = 713,336,304.29
  5. Step 5: Solve for x
    x = 713,336,304.29/30,420.36
  6. Step 6: Final answer
    x = 23,449.31

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Double scale
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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.