Home / 30,109.90-41,551.10-18,173.74

Finding the Fourth Proportional to 30,109.90, 41,551.10 and 18,173.74

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Solution

The fourth proportional to 30,109.90, 41,551.10 and 18,173.74 is: 25,079.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,109.90 : 41,551.10 = 18,173.74 : x
  2. Step 2: Convert to fraction form
    30,109.90/41,551.10 = 18,173.74/x
  3. Step 3: Cross multiply
    30,109.90x = 41,551.10 × 18,173.74
  4. Step 4: Simplify right side
    30,109.90x = 755,138,888.11
  5. Step 5: Solve for x
    x = 755,138,888.11/30,109.90
  6. Step 6: Final answer
    x = 25,079.42

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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.