Home / 20,316.09-30,386.66-18,080.49

Finding the Fourth Proportional to 20,316.09, 30,386.66 and 18,080.49

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Solution

The fourth proportional to 20,316.09, 30,386.66 and 18,080.49 is: 27,042.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.09 : 30,386.66 = 18,080.49 : x
  2. Step 2: Convert to fraction form
    20,316.09/30,386.66 = 18,080.49/x
  3. Step 3: Cross multiply
    20,316.09x = 30,386.66 × 18,080.49
  4. Step 4: Simplify right side
    20,316.09x = 549,405,611.86
  5. Step 5: Solve for x
    x = 549,405,611.86/20,316.09
  6. Step 6: Final answer
    x = 27,042.88

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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.