Home / 30,388.41-41,929.70-18,445.10

Finding the Fourth Proportional to 30,388.41, 41,929.70 and 18,445.10

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Solution

The fourth proportional to 30,388.41, 41,929.70 and 18,445.10 is: 25,450.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,388.41 : 41,929.70 = 18,445.10 : x
  2. Step 2: Convert to fraction form
    30,388.41/41,929.70 = 18,445.10/x
  3. Step 3: Cross multiply
    30,388.41x = 41,929.70 × 18,445.10
  4. Step 4: Simplify right side
    30,388.41x = 773,397,207.60
  5. Step 5: Solve for x
    x = 773,397,207.60/30,388.41
  6. Step 6: Final answer
    x = 25,450.40

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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.