Home / 30,109.23-41,552.28-18,172.40

Finding the Fourth Proportional to 30,109.23, 41,552.28 and 18,172.40

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Solution

The fourth proportional to 30,109.23, 41,552.28 and 18,172.40 is: 25,078.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,109.23 : 41,552.28 = 18,172.40 : x
  2. Step 2: Convert to fraction form
    30,109.23/41,552.28 = 18,172.40/x
  3. Step 3: Cross multiply
    30,109.23x = 41,552.28 × 18,172.40
  4. Step 4: Simplify right side
    30,109.23x = 755,104,445.31
  5. Step 5: Solve for x
    x = 755,104,445.31/30,109.23
  6. Step 6: Final answer
    x = 25,078.84

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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.