Home / 30,080.32-41,512.96-18,142.92

Finding the Fourth Proportional to 30,080.32, 41,512.96 and 18,142.92

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Solution

The fourth proportional to 30,080.32, 41,512.96 and 18,142.92 is: 25,038.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,080.32 : 41,512.96 = 18,142.92 : x
  2. Step 2: Convert to fraction form
    30,080.32/41,512.96 = 18,142.92/x
  3. Step 3: Cross multiply
    30,080.32x = 41,512.96 × 18,142.92
  4. Step 4: Simplify right side
    30,080.32x = 753,166,312.24
  5. Step 5: Solve for x
    x = 753,166,312.24/30,080.32
  6. Step 6: Final answer
    x = 25,038.51

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Half scale
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Double scale
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Similar ratio
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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.