Home / 30,161.12-45,242.06-11,436.12

Finding the Fourth Proportional to 30,161.12, 45,242.06 and 11,436.12

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Solution

The fourth proportional to 30,161.12, 45,242.06 and 11,436.12 is: 17,154.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,161.12 : 45,242.06 = 11,436.12 : x
  2. Step 2: Convert to fraction form
    30,161.12/45,242.06 = 11,436.12/x
  3. Step 3: Cross multiply
    30,161.12x = 45,242.06 × 11,436.12
  4. Step 4: Simplify right side
    30,161.12x = 517,393,627.21
  5. Step 5: Solve for x
    x = 517,393,627.21/30,161.12
  6. Step 6: Final answer
    x = 17,154.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.