Home / 30,108.90-41,549.72-18,172.74

Finding the Fourth Proportional to 30,108.90, 41,549.72 and 18,172.74

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Solution

The fourth proportional to 30,108.90, 41,549.72 and 18,172.74 is: 25,078.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,108.90 : 41,549.72 = 18,172.74 : x
  2. Step 2: Convert to fraction form
    30,108.90/41,549.72 = 18,172.74/x
  3. Step 3: Cross multiply
    30,108.90x = 41,549.72 × 18,172.74
  4. Step 4: Simplify right side
    30,108.90x = 755,072,258.63
  5. Step 5: Solve for x
    x = 755,072,258.63/30,108.90
  6. Step 6: Final answer
    x = 25,078.04

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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.